7B9V

Yeast C complex spliceosome at 2.8 Angstrom resolution with Prp18/Slu7 bound

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Protein Modification Annotation

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
S [auth P]	SCOP2 Family	Cwf15/Cwc15-like	8103886	4005200	SCOP2 (2022-06-29)
S [auth P]	SCOP2 Superfamily	Cwf15/Cwc15-like	8103887	3002807	SCOP2 (2022-06-29)
Z [auth Y]	SCOP2 Family	Canonical RBD	8102622	4000236	SCOP2 (2022-06-29)
Z [auth Y]	SCOP2 Superfamily	RNA-binding domain, RBD	8102623	3000110	SCOP2 (2022-06-29)
BA [auth a]	SCOP2 Family	Functional domain of the splicing factor Prp18	8102616	4001092	SCOP2 (2022-06-29)
BA [auth a]	SCOP2 Superfamily	Functional domain of the splicing factor Prp18	8102617	3000735	SCOP2 (2022-06-29)
CA [auth b]	SCOP2B Superfamily	Sm-like ribonucleoproteins	8077613	3000419	SCOP2B (2022-06-29)
KA [auth k]	SCOP2B Superfamily	Sm-like ribonucleoproteins	8077613	3000419	SCOP2B (2022-06-29)
EA [auth d]	SCOP2B Superfamily	Sm-like ribonucleoproteins	8098694	3000419	SCOP2B (2022-06-29)
NA [auth n]	SCOP2B Superfamily	Sm-like ribonucleoproteins	8098694	3000419	SCOP2B (2022-06-29)
GA [auth f]	SCOP2B Superfamily	Sm-like ribonucleoproteins	8043703	3000419	SCOP2B (2022-06-29)
QA [auth q]	SCOP2B Superfamily	Sm-like ribonucleoproteins	8043703	3000419	SCOP2B (2022-06-29)
HA [auth g]	SCOP2B Superfamily	Sm-like ribonucleoproteins	8098668	3000419	SCOP2B (2022-06-29)
RA [auth r]	SCOP2B Superfamily	Sm-like ribonucleoproteins	8098668	3000419	SCOP2B (2022-06-29)
IA [auth h]	SCOP2B Superfamily	Sm-like ribonucleoproteins	8082631	3000419	SCOP2B (2022-06-29)
LA [auth l]	SCOP2B Superfamily	Sm-like ribonucleoproteins	8082631	3000419	SCOP2B (2022-06-29)
JA [auth j]	SCOP2B Superfamily	Sm-like ribonucleoproteins	8063490	3000419	SCOP2B (2022-06-29)
MA [auth m]	SCOP2B Superfamily	Sm-like ribonucleoproteins	8063490	3000419	SCOP2B (2022-06-29)
D [auth A]	SCOP2B Superfamily	JAB1/MPN domain-like	8053281	3001105	SCOP2B (2022-06-29)
D [auth A]	SCOP2B Superfamily	Ribonuclease H-like	8040983	3000143	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
K [auth H]	MIF4G	e7b9vH2	A: alpha superhelices	X: Repetitive alpha hairpins	H: ARM repeat (From Topology)	T: ARM repeat	F: MIF4G	ECOD (1.6)
K [auth H]	MA3	e7b9vH1	A: alpha superhelices	X: Repetitive alpha hairpins	H: ARM repeat (From Topology)	T: ARM repeat	F: MA3	ECOD (1.6)
M [auth J]	ANAPC4_WD40_2	e7b9vJ1	A: beta duplicates or obligate multimers	X: beta-propeller-like	H: beta-propeller	T: 7-bladed	F: ANAPC4_WD40_2	ECOD (1.6)
O [auth L]	G10	e7b9vL1	A: few secondary structure elements	X: Pre-mRNA-splicing factor BUD31 (From Topology)	H: Pre-mRNA-splicing factor BUD31 (From Topology)	T: Pre-mRNA-splicing factor BUD31	F: G10	ECOD (1.6)
Q [auth N]	RRM_1_7	e7b9vN2	A: a+b two layers	X: Alpha-beta plaits	H: RNA-binding domain, RBD (From Topology)	T: RNA-binding domain, RBD	F: RRM_1_7	ECOD (1.6)
Q [auth N]	KOG0153	e7b9vN1	A: few secondary structure elements	X: RING/U-box-like	H: RING/U-box-like	T: FYVE/PHD zinc finger	F: KOG0153	ECOD (1.6)
T [auth Q]	OB_NTP_bind	e7b9vQ1	A: beta barrels	X: OB-fold	H: Nucleic acid-binding proteins (From Topology)	T: Nucleic acid-binding proteins	F: OB_NTP_bind	ECOD (1.6)
T [auth Q]	HA2_N,HA2_C	e7b9vQ2	A: alpha arrays	X: Sec63 N-terminal subdomain-like (From Topology)	H: Sec63 N-terminal subdomain-like (From Topology)	T: Sec63 N-terminal subdomain-like	F: HA2_N,HA2_C	ECOD (1.6)
T [auth Q]	Helicase_C_7	e7b9vQ3	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: Helicase_C_7	ECOD (1.6)
T [auth Q]	HA2_N,DEAD_3	e7b9vQ4	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: HA2_N,DEAD_3	ECOD (1.6)
U [auth R]	cwf21	e7b9vR1	A: alpha duplicates or obligate multimers	X: cwf21 domain (From Topology)	H: cwf21 domain (From Topology)	T: cwf21 domain	F: cwf21	ECOD (1.6)
V [auth S]	TPR_15	e7b9vS1	A: alpha superhelices	X: Repetitive alpha hairpins	H: ARM repeat (From Topology)	T: ARM repeat	F: TPR_15	ECOD (1.6)
Z [auth Y]	RRM_1_2	e7b9vY1	A: a+b two layers	X: Alpha-beta plaits	H: RNA-binding domain, RBD (From Topology)	T: RNA-binding domain, RBD	F: RRM_1_2	ECOD (1.6)
BA [auth a]	Prp18	e7b9va1	A: alpha bundles	X: Functional domain of the splicing factor Prp18 (From Topology)	H: Functional domain of the splicing factor Prp18 (From Topology)	T: Functional domain of the splicing factor Prp18	F: Prp18	ECOD (1.6)
CA [auth b]	LSM	e7b9vb1	A: beta barrels	X: SH3	H: SH3	T: SH3	F: LSM	ECOD (1.6)
KA [auth k]	LSM	e7b9vk1	A: beta barrels	X: SH3	H: SH3	T: SH3	F: LSM	ECOD (1.6)
EA [auth d]	LSM	e7b9vd1	A: beta barrels	X: SH3	H: SH3	T: SH3	F: LSM	ECOD (1.6)
NA [auth n]	LSM	e7b9vn1	A: beta barrels	X: SH3	H: SH3	T: SH3	F: LSM	ECOD (1.6)
FA [auth e]	LSM	e7b9ve1	A: beta barrels	X: SH3	H: SH3	T: SH3	F: LSM	ECOD (1.6)
PA [auth p]	LSM	e7b9vp1	A: beta barrels	X: SH3	H: SH3	T: SH3	F: LSM	ECOD (1.6)
GA [auth f]	LSM	e7b9vf1	A: beta barrels	X: SH3	H: SH3	T: SH3	F: LSM	ECOD (1.6)
QA [auth q]	LSM	e7b9vq1	A: beta barrels	X: SH3	H: SH3	T: SH3	F: LSM	ECOD (1.6)
HA [auth g]	LSM	e7b9vg1	A: beta barrels	X: SH3	H: SH3	T: SH3	F: LSM	ECOD (1.6)
RA [auth r]	LSM	e7b9vr1	A: beta barrels	X: SH3	H: SH3	T: SH3	F: LSM	ECOD (1.6)
IA [auth h]	LSM	e7b9vh1	A: beta barrels	X: SH3	H: SH3	T: SH3	F: LSM	ECOD (1.6)
LA [auth l]	LSM	e7b9vl1	A: beta barrels	X: SH3	H: SH3	T: SH3	F: LSM	ECOD (1.6)
JA [auth j]	LSM	e7b9vj1	A: beta barrels	X: SH3	H: SH3	T: SH3	F: LSM	ECOD (1.6)
MA [auth m]	LSM	e7b9vm1	A: beta barrels	X: SH3	H: SH3	T: SH3	F: LSM	ECOD (1.6)
OA [auth o]	ANAPC4_WD40_9	e7b9vo1	A: beta duplicates or obligate multimers	X: beta-propeller-like	H: beta-propeller	T: 7-bladed	F: ANAPC4_WD40_9	ECOD (1.6)
D [auth A]	U5_2-snRNA_bdg	e7b9vA1	A: alpha bundles	X: helical bundle domain in reverse transcriptase-like polymerases (From Topology)	H: helical bundle domain in reverse transcriptase-like polymerases (From Topology)	T: helical bundle domain in reverse transcriptase-like polymerases	F: U5_2-snRNA_bdg	ECOD (1.6)
D [auth A]	PROCN_C,PROCN_N	e7b9vA3	A: alpha complex topology	X: Pre-mRNA-splicing factor 8 N-terminal domain (From Topology)	H: Pre-mRNA-splicing factor 8 N-terminal domain (From Topology)	T: Pre-mRNA-splicing factor 8 N-terminal domain	F: PROCN_C,PROCN_N	ECOD (1.6)
D [auth A]	RRM_4	e7b9vA2	A: a+b two layers	X: Alpha-beta plaits	H: Adenylyl and guanylyl cyclase catalytic domain-like	T: Adenylyl and guanylyl cyclase catalytic domain-like	F: RRM_4	ECOD (1.6)
D [auth A]	PROCT	e7b9vA4	A: a+b three layers	X: Cytidine deaminase-like (From Topology)	H: Cytidine deaminase-like (From Topology)	T: Cytidine deaminase-like	F: PROCT	ECOD (1.6)
D [auth A]	U6-snRNA_bdg	e7b9vA6	A: a/b three-layered sandwiches	X: Restriction endonuclease-like	H: Restriction endonuclease-like (From Topology)	T: Restriction endonuclease-like	F: U6-snRNA_bdg	ECOD (1.6)
D [auth A]	PRP8_domainIV	e7b9vA5	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: PRP8_domainIV	ECOD (1.6)
E [auth B]	Sec63_3rd	e7b9vB5	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Sec63_3rd	ECOD (1.6)
E [auth B]	KOG0952	e7b9vB6	A: alpha arrays	X: HTH	H: HTH	T: winged	F: KOG0952	ECOD (1.6)
E [auth B]	Sec63_2nd_1	e7b9vB1	A: alpha arrays	X: HhH/H2TH	H: SAM-like subdomain in Sec63-like proteins (From Topology)	T: SAM-like subdomain in Sec63-like proteins	F: Sec63_2nd_1	ECOD (1.6)
E [auth B]	Sec63_2nd	e7b9vB12	A: alpha arrays	X: HhH/H2TH	H: SAM-like subdomain in Sec63-like proteins (From Topology)	T: SAM-like subdomain in Sec63-like proteins	F: Sec63_2nd	ECOD (1.6)
E [auth B]	Sec63_1st	e7b9vB11	A: alpha arrays	X: Sec63 N-terminal subdomain-like (From Topology)	H: Sec63 N-terminal subdomain-like (From Topology)	T: Sec63 N-terminal subdomain-like	F: Sec63_1st	ECOD (1.6)
E [auth B]	DEAD_1	e7b9vB10	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: DEAD_1	ECOD (1.6)
E [auth B]	Helicase_C_5	e7b9vB2	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: Helicase_C_5	ECOD (1.6)
E [auth B]	DEAD_1,KOG0951_2nd	e7b9vB3	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: DEAD_1,KOG0951_2nd	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
J [auth G]	PF01423	LSM domain (LSM)	LSM domain	The LSM domain contains Sm proteins as well as other related LSM (Like Sm) proteins. The U1, U2, U4/U6, and U5 small nuclear ribonucleoprotein particles (snRNPs) involved in pre-mRNA splicing contain seven Sm proteins (B/B', D1, D2, D3, E, F and G) i ...	The LSM domain contains Sm proteins as well as other related LSM (Like Sm) proteins. The U1, U2, U4/U6, and U5 small nuclear ribonucleoprotein particles (snRNPs) involved in pre-mRNA splicing contain seven Sm proteins (B/B', D1, D2, D3, E, F and G) in common, which assemble around the Sm site present in four of the major spliceosomal small nuclear RNAs. The U6 snRNP binds to the LSM (Like Sm) proteins [3]. Sm proteins are also found in archaebacteria, which do not have any splicing apparatus suggesting a more general role for Sm proteins. All Sm proteins contain a common sequence motif in two segments, Sm1 and Sm2, separated by a short variable linker. This family also includes the bacterial Hfq (host factor Q) proteins. Hfq are also RNA-binding proteins, that form hexameric rings.	Domain
K [auth H]	PF01423	LSM domain (LSM)	LSM domain	The LSM domain contains Sm proteins as well as other related LSM (Like Sm) proteins. The U1, U2, U4/U6, and U5 small nuclear ribonucleoprotein particles (snRNPs) involved in pre-mRNA splicing contain seven Sm proteins (B/B', D1, D2, D3, E, F and G) i ...	The LSM domain contains Sm proteins as well as other related LSM (Like Sm) proteins. The U1, U2, U4/U6, and U5 small nuclear ribonucleoprotein particles (snRNPs) involved in pre-mRNA splicing contain seven Sm proteins (B/B', D1, D2, D3, E, F and G) in common, which assemble around the Sm site present in four of the major spliceosomal small nuclear RNAs. The U6 snRNP binds to the LSM (Like Sm) proteins [3]. Sm proteins are also found in archaebacteria, which do not have any splicing apparatus suggesting a more general role for Sm proteins. All Sm proteins contain a common sequence motif in two segments, Sm1 and Sm2, separated by a short variable linker. This family also includes the bacterial Hfq (host factor Q) proteins. Hfq are also RNA-binding proteins, that form hexameric rings.	Domain
M [auth J]	PF01423	LSM domain (LSM)	LSM domain	The LSM domain contains Sm proteins as well as other related LSM (Like Sm) proteins. The U1, U2, U4/U6, and U5 small nuclear ribonucleoprotein particles (snRNPs) involved in pre-mRNA splicing contain seven Sm proteins (B/B', D1, D2, D3, E, F and G) i ...	The LSM domain contains Sm proteins as well as other related LSM (Like Sm) proteins. The U1, U2, U4/U6, and U5 small nuclear ribonucleoprotein particles (snRNPs) involved in pre-mRNA splicing contain seven Sm proteins (B/B', D1, D2, D3, E, F and G) in common, which assemble around the Sm site present in four of the major spliceosomal small nuclear RNAs. The U6 snRNP binds to the LSM (Like Sm) proteins [3]. Sm proteins are also found in archaebacteria, which do not have any splicing apparatus suggesting a more general role for Sm proteins. All Sm proteins contain a common sequence motif in two segments, Sm1 and Sm2, separated by a short variable linker. This family also includes the bacterial Hfq (host factor Q) proteins. Hfq are also RNA-binding proteins, that form hexameric rings.	Domain
N [auth K]	PF01423	LSM domain (LSM)	LSM domain	The LSM domain contains Sm proteins as well as other related LSM (Like Sm) proteins. The U1, U2, U4/U6, and U5 small nuclear ribonucleoprotein particles (snRNPs) involved in pre-mRNA splicing contain seven Sm proteins (B/B', D1, D2, D3, E, F and G) i ...	The LSM domain contains Sm proteins as well as other related LSM (Like Sm) proteins. The U1, U2, U4/U6, and U5 small nuclear ribonucleoprotein particles (snRNPs) involved in pre-mRNA splicing contain seven Sm proteins (B/B', D1, D2, D3, E, F and G) in common, which assemble around the Sm site present in four of the major spliceosomal small nuclear RNAs. The U6 snRNP binds to the LSM (Like Sm) proteins [3]. Sm proteins are also found in archaebacteria, which do not have any splicing apparatus suggesting a more general role for Sm proteins. All Sm proteins contain a common sequence motif in two segments, Sm1 and Sm2, separated by a short variable linker. This family also includes the bacterial Hfq (host factor Q) proteins. Hfq are also RNA-binding proteins, that form hexameric rings.	Domain
O [auth L]	PF01423	LSM domain (LSM)	LSM domain	The LSM domain contains Sm proteins as well as other related LSM (Like Sm) proteins. The U1, U2, U4/U6, and U5 small nuclear ribonucleoprotein particles (snRNPs) involved in pre-mRNA splicing contain seven Sm proteins (B/B', D1, D2, D3, E, F and G) i ...	The LSM domain contains Sm proteins as well as other related LSM (Like Sm) proteins. The U1, U2, U4/U6, and U5 small nuclear ribonucleoprotein particles (snRNPs) involved in pre-mRNA splicing contain seven Sm proteins (B/B', D1, D2, D3, E, F and G) in common, which assemble around the Sm site present in four of the major spliceosomal small nuclear RNAs. The U6 snRNP binds to the LSM (Like Sm) proteins [3]. Sm proteins are also found in archaebacteria, which do not have any splicing apparatus suggesting a more general role for Sm proteins. All Sm proteins contain a common sequence motif in two segments, Sm1 and Sm2, separated by a short variable linker. This family also includes the bacterial Hfq (host factor Q) proteins. Hfq are also RNA-binding proteins, that form hexameric rings.	Domain
P [auth M]	PF01423	LSM domain (LSM)	LSM domain	The LSM domain contains Sm proteins as well as other related LSM (Like Sm) proteins. The U1, U2, U4/U6, and U5 small nuclear ribonucleoprotein particles (snRNPs) involved in pre-mRNA splicing contain seven Sm proteins (B/B', D1, D2, D3, E, F and G) i ...	The LSM domain contains Sm proteins as well as other related LSM (Like Sm) proteins. The U1, U2, U4/U6, and U5 small nuclear ribonucleoprotein particles (snRNPs) involved in pre-mRNA splicing contain seven Sm proteins (B/B', D1, D2, D3, E, F and G) in common, which assemble around the Sm site present in four of the major spliceosomal small nuclear RNAs. The U6 snRNP binds to the LSM (Like Sm) proteins [3]. Sm proteins are also found in archaebacteria, which do not have any splicing apparatus suggesting a more general role for Sm proteins. All Sm proteins contain a common sequence motif in two segments, Sm1 and Sm2, separated by a short variable linker. This family also includes the bacterial Hfq (host factor Q) proteins. Hfq are also RNA-binding proteins, that form hexameric rings.	Domain
Q [auth N]	PF01423	LSM domain (LSM)	LSM domain	The LSM domain contains Sm proteins as well as other related LSM (Like Sm) proteins. The U1, U2, U4/U6, and U5 small nuclear ribonucleoprotein particles (snRNPs) involved in pre-mRNA splicing contain seven Sm proteins (B/B', D1, D2, D3, E, F and G) i ...	The LSM domain contains Sm proteins as well as other related LSM (Like Sm) proteins. The U1, U2, U4/U6, and U5 small nuclear ribonucleoprotein particles (snRNPs) involved in pre-mRNA splicing contain seven Sm proteins (B/B', D1, D2, D3, E, F and G) in common, which assemble around the Sm site present in four of the major spliceosomal small nuclear RNAs. The U6 snRNP binds to the LSM (Like Sm) proteins [3]. Sm proteins are also found in archaebacteria, which do not have any splicing apparatus suggesting a more general role for Sm proteins. All Sm proteins contain a common sequence motif in two segments, Sm1 and Sm2, separated by a short variable linker. This family also includes the bacterial Hfq (host factor Q) proteins. Hfq are also RNA-binding proteins, that form hexameric rings.	Domain
S [auth P]	PF01423	LSM domain (LSM)	LSM domain	The LSM domain contains Sm proteins as well as other related LSM (Like Sm) proteins. The U1, U2, U4/U6, and U5 small nuclear ribonucleoprotein particles (snRNPs) involved in pre-mRNA splicing contain seven Sm proteins (B/B', D1, D2, D3, E, F and G) i ...	The LSM domain contains Sm proteins as well as other related LSM (Like Sm) proteins. The U1, U2, U4/U6, and U5 small nuclear ribonucleoprotein particles (snRNPs) involved in pre-mRNA splicing contain seven Sm proteins (B/B', D1, D2, D3, E, F and G) in common, which assemble around the Sm site present in four of the major spliceosomal small nuclear RNAs. The U6 snRNP binds to the LSM (Like Sm) proteins [3]. Sm proteins are also found in archaebacteria, which do not have any splicing apparatus suggesting a more general role for Sm proteins. All Sm proteins contain a common sequence motif in two segments, Sm1 and Sm2, separated by a short variable linker. This family also includes the bacterial Hfq (host factor Q) proteins. Hfq are also RNA-binding proteins, that form hexameric rings.	Domain
T [auth Q]	PF01423	LSM domain (LSM)	LSM domain	The LSM domain contains Sm proteins as well as other related LSM (Like Sm) proteins. The U1, U2, U4/U6, and U5 small nuclear ribonucleoprotein particles (snRNPs) involved in pre-mRNA splicing contain seven Sm proteins (B/B', D1, D2, D3, E, F and G) i ...	The LSM domain contains Sm proteins as well as other related LSM (Like Sm) proteins. The U1, U2, U4/U6, and U5 small nuclear ribonucleoprotein particles (snRNPs) involved in pre-mRNA splicing contain seven Sm proteins (B/B', D1, D2, D3, E, F and G) in common, which assemble around the Sm site present in four of the major spliceosomal small nuclear RNAs. The U6 snRNP binds to the LSM (Like Sm) proteins [3]. Sm proteins are also found in archaebacteria, which do not have any splicing apparatus suggesting a more general role for Sm proteins. All Sm proteins contain a common sequence motif in two segments, Sm1 and Sm2, separated by a short variable linker. This family also includes the bacterial Hfq (host factor Q) proteins. Hfq are also RNA-binding proteins, that form hexameric rings.	Domain
U [auth R]	PF01423	LSM domain (LSM)	LSM domain	The LSM domain contains Sm proteins as well as other related LSM (Like Sm) proteins. The U1, U2, U4/U6, and U5 small nuclear ribonucleoprotein particles (snRNPs) involved in pre-mRNA splicing contain seven Sm proteins (B/B', D1, D2, D3, E, F and G) i ...	The LSM domain contains Sm proteins as well as other related LSM (Like Sm) proteins. The U1, U2, U4/U6, and U5 small nuclear ribonucleoprotein particles (snRNPs) involved in pre-mRNA splicing contain seven Sm proteins (B/B', D1, D2, D3, E, F and G) in common, which assemble around the Sm site present in four of the major spliceosomal small nuclear RNAs. The U6 snRNP binds to the LSM (Like Sm) proteins [3]. Sm proteins are also found in archaebacteria, which do not have any splicing apparatus suggesting a more general role for Sm proteins. All Sm proteins contain a common sequence motif in two segments, Sm1 and Sm2, separated by a short variable linker. This family also includes the bacterial Hfq (host factor Q) proteins. Hfq are also RNA-binding proteins, that form hexameric rings.	Domain
D [auth A]	PF10597	U5-snRNA binding site 2 of PrP8 (U5_2-snRNA_bdg)	U5-snRNA binding site 2 of PrP8	The essential spliceosomal protein Prp8 interacts with U5 and U6 snRNAs and with specific pre-mRNA sequences that participate in catalysis [1]. This close association with crucial RNA sequences, together with extensive genetic evidence, suggests that ...	The essential spliceosomal protein Prp8 interacts with U5 and U6 snRNAs and with specific pre-mRNA sequences that participate in catalysis [1]. This close association with crucial RNA sequences, together with extensive genetic evidence, suggests that Prp8 could directly affect the function of the catalytic core, perhaps acting as a splicing cofactor [2].	Domain
D [auth A]	PF10598	RNA recognition motif of the spliceosomal PrP8 (RRM_4)	RNA recognition motif of the spliceosomal PrP8	The large RNA-protein complex of the spliceosome catalyses pre-mRNA splicing. One of the most conserved core proteins is PrP8 which occupies a central position in the catalytic core of the spliceosome, and has been implicated in several crucial molec ...	The large RNA-protein complex of the spliceosome catalyses pre-mRNA splicing. One of the most conserved core proteins is PrP8 which occupies a central position in the catalytic core of the spliceosome, and has been implicated in several crucial molecular rearrangements that occur there, and has recently come under the spotlight for its role in the inherited human disease, Retinitis Pigmentosa [1]. The RNA-recognition motif of PrP8 is highly conserved and provides a possible RNA binding centre for the 5-prime SS, BP, or 3-prime SS of pre-mRNA which are known to contact with Prp8. The most conserved regions of an RRM are defined as the RNP1 and RNP2 sequences. Recognition of RNA targets can also be modulated by a number of other factors, most notably the two loops beta1-alpha1, beta2-beta3 and the amino acid residues C-terminal to the RNP2 domain [2].	Domain
D [auth A]	PF10596	U6-snRNA interacting domain of PrP8 (U6-snRNA_bdg)	U6-snRNA interacting domain of PrP8	This domain incorporates the interacting site for the U6-snRNA as part of the U4/U6.U5 tri-snRNPs complex of the spliceosome, and is the prime candidate for the role of cofactor for the spliceosome's RNA core. The essential spliceosomal protein Prp8 ...	This domain incorporates the interacting site for the U6-snRNA as part of the U4/U6.U5 tri-snRNPs complex of the spliceosome, and is the prime candidate for the role of cofactor for the spliceosome's RNA core. The essential spliceosomal protein Prp8 interacts with U5 and U6 snRNAs and with specific pre-mRNA sequences that participate in catalysis. This close association with crucial RNA sequences, together with extensive genetic evidence, suggests that Prp8 could directly affect the function of the catalytic core, perhaps acting as a splicing cofactor [1].	Domain
D [auth A]	PF12134	PRP8 domain IV core (PRP8_domainIV)	PRP8 domain IV core	This domain is found in eukaryotes, and is about 20 amino acids in length. It is found associated with Pfam:PF10597, Pfam:PF10596, Pfam:PF10598, Pfam:PF08083, Pfam:PF08082, Pfam:PF01398, Pfam:PF08084. There is a conserved LILR sequence motif. The dom ...	This domain is found in eukaryotes, and is about 20 amino acids in length. It is found associated with Pfam:PF10597, Pfam:PF10596, Pfam:PF10598, Pfam:PF08083, Pfam:PF08082, Pfam:PF01398, Pfam:PF08084. There is a conserved LILR sequence motif. The domain is a selenomethionine domain in a subunit of the spliceosome. The function of PRP8 domain IV is believed to be interaction with the splicosomal core.	Domain
D [auth A]	PF08082	PRO8NT (NUC069), PrP8 N-terminal domain (PRO8NT)	PRO8NT (NUC069), PrP8 N-terminal domain	The PRO8NT domain is found at the N-terminus of pre-mRNA splicing factors of PRO8 family [1]. The NLS or nuclear localisation signal for these spliceosome proteins begins at the start and runs for 60 residues. N-terminal to this domain is a highly va ...	The PRO8NT domain is found at the N-terminus of pre-mRNA splicing factors of PRO8 family [1]. The NLS or nuclear localisation signal for these spliceosome proteins begins at the start and runs for 60 residues. N-terminal to this domain is a highly variable proline-rich region [4].	Domain
D [auth A]	PF08083	PROCN (NUC071) domain (PROCN)	PROCN (NUC071) domain	The PROCN domain is the central domain in pre-mRNA splicing factors of PRO8 family [1].	Domain
D [auth A]	PF08084	PROCT (NUC072) domain (PROCT)	PROCT (NUC072) domain	The PROCT domain is the C-terminal domain in pre-mRNA splicing factors of PRO8 family [1].	Domain
E [auth B]	PF02889	Sec63 Brl domain (Sec63)	Sec63 Brl domain	-	Family
E [auth B]	PF00270	DEAD/DEAH box helicase (DEAD)	DEAD/DEAH box helicase	Members of this family include the DEAD and DEAH box helicases. Helicases are involved in unwinding nucleic acids. The DEAD box helicases are involved in various aspects of RNA metabolism, including nuclear transcription, pre mRNA splicing, ribosome ...	Members of this family include the DEAD and DEAH box helicases. Helicases are involved in unwinding nucleic acids. The DEAD box helicases are involved in various aspects of RNA metabolism, including nuclear transcription, pre mRNA splicing, ribosome biogenesis, nucleocytoplasmic transport, translation, RNA decay and organellar gene expression.	Domain
E [auth B]	PF00271	Helicase conserved C-terminal domain (Helicase_C)	Helicase conserved C-terminal domain	The Prosite family is restricted to DEAD/H helicases, whereas this domain family is found in a wide variety of helicases and helicase related proteins. It may be that this is not an autonomously folding unit, but an integral part of the helicase.	Domain
E [auth B]	PF01423	LSM domain (LSM)	LSM domain	The LSM domain contains Sm proteins as well as other related LSM (Like Sm) proteins. The U1, U2, U4/U6, and U5 small nuclear ribonucleoprotein particles (snRNPs) involved in pre-mRNA splicing contain seven Sm proteins (B/B', D1, D2, D3, E, F and G) i ...	The LSM domain contains Sm proteins as well as other related LSM (Like Sm) proteins. The U1, U2, U4/U6, and U5 small nuclear ribonucleoprotein particles (snRNPs) involved in pre-mRNA splicing contain seven Sm proteins (B/B', D1, D2, D3, E, F and G) in common, which assemble around the Sm site present in four of the major spliceosomal small nuclear RNAs. The U6 snRNP binds to the LSM (Like Sm) proteins [3]. Sm proteins are also found in archaebacteria, which do not have any splicing apparatus suggesting a more general role for Sm proteins. All Sm proteins contain a common sequence motif in two segments, Sm1 and Sm2, separated by a short variable linker. This family also includes the bacterial Hfq (host factor Q) proteins. Hfq are also RNA-binding proteins, that form hexameric rings.	Domain
G [auth D]	PF01423	LSM domain (LSM)	LSM domain	The LSM domain contains Sm proteins as well as other related LSM (Like Sm) proteins. The U1, U2, U4/U6, and U5 small nuclear ribonucleoprotein particles (snRNPs) involved in pre-mRNA splicing contain seven Sm proteins (B/B', D1, D2, D3, E, F and G) i ...	The LSM domain contains Sm proteins as well as other related LSM (Like Sm) proteins. The U1, U2, U4/U6, and U5 small nuclear ribonucleoprotein particles (snRNPs) involved in pre-mRNA splicing contain seven Sm proteins (B/B', D1, D2, D3, E, F and G) in common, which assemble around the Sm site present in four of the major spliceosomal small nuclear RNAs. The U6 snRNP binds to the LSM (Like Sm) proteins [3]. Sm proteins are also found in archaebacteria, which do not have any splicing apparatus suggesting a more general role for Sm proteins. All Sm proteins contain a common sequence motif in two segments, Sm1 and Sm2, separated by a short variable linker. This family also includes the bacterial Hfq (host factor Q) proteins. Hfq are also RNA-binding proteins, that form hexameric rings.	Domain
I [auth F]	PF01423	LSM domain (LSM)	LSM domain	The LSM domain contains Sm proteins as well as other related LSM (Like Sm) proteins. The U1, U2, U4/U6, and U5 small nuclear ribonucleoprotein particles (snRNPs) involved in pre-mRNA splicing contain seven Sm proteins (B/B', D1, D2, D3, E, F and G) i ...	The LSM domain contains Sm proteins as well as other related LSM (Like Sm) proteins. The U1, U2, U4/U6, and U5 small nuclear ribonucleoprotein particles (snRNPs) involved in pre-mRNA splicing contain seven Sm proteins (B/B', D1, D2, D3, E, F and G) in common, which assemble around the Sm site present in four of the major spliceosomal small nuclear RNAs. The U6 snRNP binds to the LSM (Like Sm) proteins [3]. Sm proteins are also found in archaebacteria, which do not have any splicing apparatus suggesting a more general role for Sm proteins. All Sm proteins contain a common sequence motif in two segments, Sm1 and Sm2, separated by a short variable linker. This family also includes the bacterial Hfq (host factor Q) proteins. Hfq are also RNA-binding proteins, that form hexameric rings.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth 2]	U2 snRNA	-	-	-
J [auth G]	Pre-mRNA-splicing factor ISY1	-	-	-
K [auth H]	CWC22 isoform 1	-	-	-
L [auth I]	Branched intron and 3' exon of UBC4 pre-mRNA	-	-	-
M [auth J]	BJ4_G0054360.mRNA.1.CDS.1	-	-	-
N [auth K]	Pre-mRNA-processing protein 45	-	-	-
O [auth L]	BUD31 isoform 1	-	-	-
P [auth M]	Pre-mRNA-splicing factor CWC2	-	-	-
Q [auth N]	Pre-mRNA-splicing factor SLT11	-	-	-
R [auth O]	Y55_G0042700.mRNA.1.CDS.1	-	-	-
S [auth P]	Pre-mRNA-splicing factor CWC15	-	-	-
B [auth 5]	U5 snRNA	-	-	-
T [auth Q]	Pre-mRNA-splicing factor ATP-dependent RNA helicase PRP16	-	-	-
U [auth R]	Pre-mRNA-splicing factor CWC21	-	-	-
V [auth S]	CLF1 isoform 1	-	-	-
W [auth T]	SYF1 isoform 1	-	-	-
X [auth W]	HLJ1_G0053790.mRNA.1.CDS.1	-	-	-
Y [auth X]	Unassigned structure	-	-	-
Z [auth Y]	BJ4_G0027490.mRNA.1.CDS.1	-	-	-
AA [auth Z]	NTC20 isoform 1	-	-	-
BA [auth a]	Pre-mRNA-splicing factor 18	-	-	-
CA [auth b], KA [auth k]	Small nuclear ribonucleoprotein-associated protein B	ribonucleoprotein complex binding snRNP binding protein-containing complex binding binding RNA binding organic cyclic compound binding nucleic acid binding	ribonucleoprotein complex biogenesis cellular biosynthetic process RNA metabolic process mRNA processing protein-RNA complex assembly cellular component organization cellular component biogenesis nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process spliceosomal complex assembly protein-RNA complex organization cellular component assembly protein-containing complex assembly ribonucleoprotein complex biogenesis cellular biosynthetic process RNA metabolic process mRNA processing protein-RNA complex assembly cellular component organization cellular component biogenesis nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process spliceosomal complex assembly protein-RNA complex organization cellular component assembly protein-containing complex assembly cellular component organization or biogenesis RNA processing RNA splicing protein-containing complex organization cellular metabolic process primary metabolic process gene expression nucleobase-containing compound biosynthetic process mRNA metabolic process macromolecule biosynthetic process nucleic acid metabolic process biosynthetic process RNA splicing, via transesterification reactions mRNA splicing, via spliceosome cellular process metabolic process RNA splicing, via transesterification reactions with bulged adenosine as nucleophile macromolecule metabolic process mRNA splice site recognition mRNA 5'-splice site recognition mRNA cis splicing, via spliceosome RNA capping 7-methylguanosine cap hypermethylation macromolecule methylation RNA modification methylation macromolecule modification RNA 5'-end processing RNA methylation U2-type prespliceosome assembly spliceosomal snRNP assembly	membrane-bounded organelle spliceosomal snRNP complex protein-containing complex intracellular anatomical structure nucleus nuclear protein-containing complex Sm-like protein family complex intracellular membrane-bounded organelle cellular anatomical entity intracellular organelle U4 snRNP small nuclear ribonucleoprotein complex organelle ribonucleoprotein complex membrane-bounded organelle spliceosomal snRNP complex protein-containing complex intracellular anatomical structure nucleus nuclear protein-containing complex Sm-like protein family complex intracellular membrane-bounded organelle cellular anatomical entity intracellular organelle U4 snRNP small nuclear ribonucleoprotein complex organelle ribonucleoprotein complex U2 snRNP catalytic step 2 spliceosome catalytic complex spliceosomal complex U4/U6 snRNP U5 snRNP U2-type spliceosomal complex commitment complex cytoplasm U4/U6 x U5 tri-snRNP complex spliceosomal tri-snRNP complex prespliceosome U2-type prespliceosome U1 snRNP
C [auth 6]	U6 snRNA	-	-	-
DA [auth c]	Pre-mRNA-splicing factor SLU7	-	-	-
EA [auth d], NA [auth n]	Small nuclear ribonucleoprotein Sm D3	RNA binding binding organic cyclic compound binding nucleic acid binding mRNA binding	ribonucleoprotein complex biogenesis cellular biosynthetic process RNA metabolic process mRNA processing protein-RNA complex assembly cellular component organization cellular component biogenesis nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process spliceosomal complex assembly protein-RNA complex organization cellular component assembly protein-containing complex assembly ribonucleoprotein complex biogenesis cellular biosynthetic process RNA metabolic process mRNA processing protein-RNA complex assembly cellular component organization cellular component biogenesis nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process spliceosomal complex assembly protein-RNA complex organization cellular component assembly protein-containing complex assembly cellular component organization or biogenesis RNA processing RNA splicing protein-containing complex organization cellular metabolic process primary metabolic process gene expression nucleobase-containing compound biosynthetic process mRNA metabolic process macromolecule biosynthetic process nucleic acid metabolic process biosynthetic process RNA splicing, via transesterification reactions U2-type prespliceosome assembly mRNA splicing, via spliceosome cellular process metabolic process RNA splicing, via transesterification reactions with bulged adenosine as nucleophile macromolecule metabolic process spliceosomal snRNP assembly mRNA splice site recognition mRNA 5'-splice site recognition mRNA cis splicing, via spliceosome RNA capping 7-methylguanosine cap hypermethylation macromolecule methylation RNA modification methylation macromolecule modification RNA 5'-end processing RNA methylation	membrane-bounded organelle spliceosomal snRNP complex protein-containing complex intracellular anatomical structure nucleus nuclear protein-containing complex Sm-like protein family complex intracellular membrane-bounded organelle cellular anatomical entity intracellular organelle U4 snRNP small nuclear ribonucleoprotein complex organelle ribonucleoprotein complex membrane-bounded organelle spliceosomal snRNP complex protein-containing complex intracellular anatomical structure nucleus nuclear protein-containing complex Sm-like protein family complex intracellular membrane-bounded organelle cellular anatomical entity intracellular organelle U4 snRNP small nuclear ribonucleoprotein complex organelle ribonucleoprotein complex pICln-Sm protein complex cytoplasm spliceosomal complex precatalytic spliceosome U2 snRNP catalytic step 2 spliceosome catalytic complex cytosol U4/U6 snRNP U4/U6 x U5 tri-snRNP complex spliceosomal tri-snRNP complex U1 snRNP SMN-Sm protein complex U5 snRNP U2-type spliceosomal complex commitment complex prespliceosome U2-type prespliceosome
FA [auth e], PA [auth p]	Small nuclear ribonucleoprotein E	RNA binding binding organic cyclic compound binding nucleic acid binding splicing factor binding protein binding	ribonucleoprotein complex biogenesis cellular biosynthetic process RNA metabolic process mRNA processing protein-RNA complex assembly cellular component organization cellular component biogenesis nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process spliceosomal complex assembly protein-RNA complex organization cellular component assembly protein-containing complex assembly ribonucleoprotein complex biogenesis cellular biosynthetic process RNA metabolic process mRNA processing protein-RNA complex assembly cellular component organization cellular component biogenesis nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process spliceosomal complex assembly protein-RNA complex organization cellular component assembly protein-containing complex assembly cellular component organization or biogenesis RNA processing RNA splicing protein-containing complex organization cellular metabolic process primary metabolic process gene expression nucleobase-containing compound biosynthetic process mRNA metabolic process macromolecule biosynthetic process nucleic acid metabolic process biosynthetic process RNA splicing, via transesterification reactions U2-type prespliceosome assembly mRNA splicing, via spliceosome cellular process metabolic process RNA splicing, via transesterification reactions with bulged adenosine as nucleophile macromolecule metabolic process spliceosomal snRNP assembly mRNA splice site recognition mRNA 5'-splice site recognition mRNA cis splicing, via spliceosome RNA capping 7-methylguanosine cap hypermethylation macromolecule methylation RNA modification methylation macromolecule modification RNA 5'-end processing RNA methylation	membrane-bounded organelle spliceosomal snRNP complex protein-containing complex intracellular anatomical structure nucleus nuclear protein-containing complex Sm-like protein family complex intracellular membrane-bounded organelle cellular anatomical entity intracellular organelle U4 snRNP small nuclear ribonucleoprotein complex organelle ribonucleoprotein complex membrane-bounded organelle spliceosomal snRNP complex protein-containing complex intracellular anatomical structure nucleus nuclear protein-containing complex Sm-like protein family complex intracellular membrane-bounded organelle cellular anatomical entity intracellular organelle U4 snRNP small nuclear ribonucleoprotein complex organelle ribonucleoprotein complex pICln-Sm protein complex cytoplasm spliceosomal complex precatalytic spliceosome U2 snRNP U4/U6 snRNP U4/U6 x U5 tri-snRNP complex spliceosomal tri-snRNP complex U1 snRNP U5 snRNP U2-type spliceosomal complex commitment complex prespliceosome U2-type prespliceosome
GA [auth f], QA [auth q]	Small nuclear ribonucleoprotein F	RNA binding binding organic cyclic compound binding nucleic acid binding splicing factor binding protein binding poly-pyrimidine tract binding poly(U) RNA binding single-stranded RNA binding	ribonucleoprotein complex biogenesis cellular biosynthetic process RNA metabolic process mRNA processing protein-RNA complex assembly cellular component organization cellular component biogenesis nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process spliceosomal complex assembly protein-RNA complex organization cellular component assembly protein-containing complex assembly ribonucleoprotein complex biogenesis cellular biosynthetic process RNA metabolic process mRNA processing protein-RNA complex assembly cellular component organization cellular component biogenesis nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process spliceosomal complex assembly protein-RNA complex organization cellular component assembly protein-containing complex assembly cellular component organization or biogenesis RNA processing RNA splicing protein-containing complex organization cellular metabolic process primary metabolic process gene expression nucleobase-containing compound biosynthetic process mRNA metabolic process macromolecule biosynthetic process nucleic acid metabolic process biosynthetic process RNA splicing, via transesterification reactions U2-type prespliceosome assembly mRNA splicing, via spliceosome cellular process metabolic process RNA splicing, via transesterification reactions with bulged adenosine as nucleophile macromolecule metabolic process spliceosomal snRNP assembly mRNA splice site recognition mRNA 5'-splice site recognition mRNA cis splicing, via spliceosome RNA capping 7-methylguanosine cap hypermethylation macromolecule methylation RNA modification methylation macromolecule modification RNA 5'-end processing RNA methylation	membrane-bounded organelle spliceosomal snRNP complex protein-containing complex intracellular anatomical structure nucleus nuclear protein-containing complex Sm-like protein family complex intracellular membrane-bounded organelle cellular anatomical entity intracellular organelle U4 snRNP small nuclear ribonucleoprotein complex organelle ribonucleoprotein complex membrane-bounded organelle spliceosomal snRNP complex protein-containing complex intracellular anatomical structure nucleus nuclear protein-containing complex Sm-like protein family complex intracellular membrane-bounded organelle cellular anatomical entity intracellular organelle U4 snRNP small nuclear ribonucleoprotein complex organelle ribonucleoprotein complex pICln-Sm protein complex cytoplasm U2 snRNP catalytic step 2 spliceosome catalytic complex spliceosomal complex U4/U6 snRNP U4/U6 x U5 tri-snRNP complex spliceosomal tri-snRNP complex U1 snRNP U5 snRNP U2-type spliceosomal complex commitment complex
HA [auth g], RA [auth r]	Small nuclear ribonucleoprotein G	RNA binding binding organic cyclic compound binding nucleic acid binding	ribonucleoprotein complex biogenesis cellular biosynthetic process RNA metabolic process mRNA processing protein-RNA complex assembly cellular component organization cellular component biogenesis nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process spliceosomal complex assembly protein-RNA complex organization cellular component assembly protein-containing complex assembly ribonucleoprotein complex biogenesis cellular biosynthetic process RNA metabolic process mRNA processing protein-RNA complex assembly cellular component organization cellular component biogenesis nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process spliceosomal complex assembly protein-RNA complex organization cellular component assembly protein-containing complex assembly cellular component organization or biogenesis RNA processing RNA splicing protein-containing complex organization cellular metabolic process primary metabolic process gene expression nucleobase-containing compound biosynthetic process mRNA metabolic process macromolecule biosynthetic process nucleic acid metabolic process biosynthetic process RNA splicing, via transesterification reactions U2-type prespliceosome assembly mRNA splicing, via spliceosome cellular process metabolic process RNA splicing, via transesterification reactions with bulged adenosine as nucleophile macromolecule metabolic process spliceosomal snRNP assembly mRNA splice site recognition mRNA 5'-splice site recognition mRNA cis splicing, via spliceosome RNA capping 7-methylguanosine cap hypermethylation macromolecule methylation RNA modification methylation macromolecule modification RNA 5'-end processing RNA methylation	membrane-bounded organelle spliceosomal snRNP complex protein-containing complex intracellular anatomical structure nucleus nuclear protein-containing complex Sm-like protein family complex intracellular membrane-bounded organelle cellular anatomical entity intracellular organelle U4 snRNP small nuclear ribonucleoprotein complex organelle ribonucleoprotein complex membrane-bounded organelle spliceosomal snRNP complex protein-containing complex intracellular anatomical structure nucleus nuclear protein-containing complex Sm-like protein family complex intracellular membrane-bounded organelle cellular anatomical entity intracellular organelle U4 snRNP small nuclear ribonucleoprotein complex organelle ribonucleoprotein complex spliceosomal complex precatalytic spliceosome U2 snRNP catalytic step 2 spliceosome catalytic complex U4/U6 snRNP cytoplasm U4/U6 x U5 tri-snRNP complex spliceosomal tri-snRNP complex U1 snRNP SMN-Sm protein complex U5 snRNP U2-type spliceosomal complex commitment complex prespliceosome U2-type prespliceosome
IA [auth h], LA [auth l]	Small nuclear ribonucleoprotein Sm D1	RNA binding binding organic cyclic compound binding nucleic acid binding mRNA binding	ribonucleoprotein complex biogenesis cellular biosynthetic process RNA metabolic process mRNA processing protein-RNA complex assembly cellular component organization cellular component biogenesis nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process spliceosomal complex assembly protein-RNA complex organization cellular component assembly protein-containing complex assembly ribonucleoprotein complex biogenesis cellular biosynthetic process RNA metabolic process mRNA processing protein-RNA complex assembly cellular component organization cellular component biogenesis nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process spliceosomal complex assembly protein-RNA complex organization cellular component assembly protein-containing complex assembly cellular component organization or biogenesis RNA processing RNA splicing protein-containing complex organization cellular metabolic process primary metabolic process gene expression nucleobase-containing compound biosynthetic process mRNA metabolic process macromolecule biosynthetic process nucleic acid metabolic process biosynthetic process RNA splicing, via transesterification reactions U2-type prespliceosome assembly mRNA splicing, via spliceosome cellular process metabolic process RNA splicing, via transesterification reactions with bulged adenosine as nucleophile macromolecule metabolic process spliceosomal snRNP assembly mRNA splice site recognition mRNA 5'-splice site recognition mRNA cis splicing, via spliceosome RNA capping 7-methylguanosine cap hypermethylation macromolecule methylation RNA modification methylation macromolecule modification RNA 5'-end processing RNA methylation	membrane-bounded organelle spliceosomal snRNP complex protein-containing complex intracellular anatomical structure nucleus nuclear protein-containing complex Sm-like protein family complex intracellular membrane-bounded organelle cellular anatomical entity intracellular organelle U4 snRNP small nuclear ribonucleoprotein complex organelle ribonucleoprotein complex membrane-bounded organelle spliceosomal snRNP complex protein-containing complex intracellular anatomical structure nucleus nuclear protein-containing complex Sm-like protein family complex intracellular membrane-bounded organelle cellular anatomical entity intracellular organelle U4 snRNP small nuclear ribonucleoprotein complex organelle ribonucleoprotein complex pICln-Sm protein complex cytoplasm spliceosomal complex precatalytic spliceosome U2 snRNP catalytic step 2 spliceosome catalytic complex cytosol U4/U6 snRNP U4/U6 x U5 tri-snRNP complex spliceosomal tri-snRNP complex U1 snRNP SMN-Sm protein complex U5 snRNP U2-type spliceosomal complex commitment complex prespliceosome U2-type prespliceosome
JA [auth j], MA [auth m]	Small nuclear ribonucleoprotein Sm D2	RNA binding binding organic cyclic compound binding nucleic acid binding	ribonucleoprotein complex biogenesis cellular biosynthetic process RNA metabolic process mRNA processing protein-RNA complex assembly cellular component organization cellular component biogenesis nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process spliceosomal complex assembly protein-RNA complex organization cellular component assembly protein-containing complex assembly ribonucleoprotein complex biogenesis cellular biosynthetic process RNA metabolic process mRNA processing protein-RNA complex assembly cellular component organization cellular component biogenesis nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process spliceosomal complex assembly protein-RNA complex organization cellular component assembly protein-containing complex assembly cellular component organization or biogenesis RNA processing RNA splicing protein-containing complex organization cellular metabolic process primary metabolic process gene expression nucleobase-containing compound biosynthetic process mRNA metabolic process macromolecule biosynthetic process nucleic acid metabolic process biosynthetic process RNA splicing, via transesterification reactions U2-type prespliceosome assembly mRNA splicing, via spliceosome cellular process metabolic process RNA splicing, via transesterification reactions with bulged adenosine as nucleophile macromolecule metabolic process spliceosomal snRNP assembly mRNA splice site recognition mRNA 5'-splice site recognition mRNA cis splicing, via spliceosome RNA capping 7-methylguanosine cap hypermethylation macromolecule methylation RNA modification methylation macromolecule modification RNA 5'-end processing RNA methylation	membrane-bounded organelle spliceosomal snRNP complex protein-containing complex intracellular anatomical structure nucleus nuclear protein-containing complex Sm-like protein family complex intracellular membrane-bounded organelle cellular anatomical entity intracellular organelle U4 snRNP small nuclear ribonucleoprotein complex organelle ribonucleoprotein complex membrane-bounded organelle spliceosomal snRNP complex protein-containing complex intracellular anatomical structure nucleus nuclear protein-containing complex Sm-like protein family complex intracellular membrane-bounded organelle cellular anatomical entity intracellular organelle U4 snRNP small nuclear ribonucleoprotein complex organelle ribonucleoprotein complex pICln-Sm protein complex cytoplasm spliceosomal complex precatalytic spliceosome U2 snRNP catalytic step 2 spliceosome catalytic complex cytosol U4/U6 snRNP U4/U6 x U5 tri-snRNP complex spliceosomal tri-snRNP complex U1 snRNP U5 snRNP U2-type spliceosomal complex commitment complex prespliceosome U2-type prespliceosome
OA [auth o]	CDC40 isoform 1	-	-	-
SA [auth s]	SNT309 isoform 1	-	-	-
TA [auth t], UA [auth u], VA [auth v], WA [auth w]	Pre-mRNA-processing factor 19	-	-	-
D [auth A]	Pre-mRNA-splicing factor 8	peptidase activity catalytic activity, acting on a protein metallopeptidase activity hydrolase activity catalytic activity RNA binding snRNA binding binding organic cyclic compound binding nucleic acid binding U1 snRNA binding U6 snRNA binding mRNA binding U5 snRNA binding peptidase activity catalytic activity, acting on a protein metallopeptidase activity hydrolase activity catalytic activity RNA binding snRNA binding binding organic cyclic compound binding nucleic acid binding U1 snRNA binding U6 snRNA binding mRNA binding U5 snRNA binding U2 snRNA binding pre-mRNA binding pre-mRNA intronic binding	ribonucleoprotein complex biogenesis cellular biosynthetic process RNA metabolic process mRNA processing spliceosomal tri-snRNP complex assembly protein-RNA complex assembly cellular component organization cellular component biogenesis nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process protein-RNA complex organization cellular component assembly protein-containing complex assembly ribonucleoprotein complex biogenesis cellular biosynthetic process RNA metabolic process mRNA processing spliceosomal tri-snRNP complex assembly protein-RNA complex assembly cellular component organization cellular component biogenesis nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process protein-RNA complex organization cellular component assembly protein-containing complex assembly cellular component organization or biogenesis RNA processing RNA splicing protein-containing complex organization spliceosomal snRNP assembly cellular metabolic process primary metabolic process gene expression nucleobase-containing compound biosynthetic process mRNA metabolic process macromolecule biosynthetic process nucleic acid metabolic process biosynthetic process RNA splicing, via transesterification reactions mRNA splicing, via spliceosome cellular process metabolic process RNA splicing, via transesterification reactions with bulged adenosine as nucleophile macromolecule metabolic process spliceosomal complex assembly mRNA splice site recognition mRNA 3'-splice site recognition mRNA 5'-splice site recognition mRNA cis splicing, via spliceosome generation of catalytic spliceosome for second transesterification step spliceosomal conformational changes to generate catalytic conformation	membrane-bounded organelle catalytic step 2 spliceosome protein-containing complex intracellular anatomical structure catalytic complex nucleus nuclear protein-containing complex intracellular membrane-bounded organelle cellular anatomical entity intracellular organelle spliceosomal complex organelle ribonucleoprotein complex cytoplasm membrane-bounded organelle catalytic step 2 spliceosome protein-containing complex intracellular anatomical structure catalytic complex nucleus nuclear protein-containing complex intracellular membrane-bounded organelle cellular anatomical entity intracellular organelle spliceosomal complex organelle ribonucleoprotein complex cytoplasm spliceosomal snRNP complex Sm-like protein family complex U4/U6 x U5 tri-snRNP complex spliceosomal tri-snRNP complex small nuclear ribonucleoprotein complex U5 snRNP
XA [auth y]	Pre-mRNA-splicing factor SYF2	-	-	-
E [auth B]	Pre-mRNA-splicing helicase BRR2	binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding nucleic acid binding pyrophosphatase activity ATP hydrolysis activity ribonucleoside triphosphate phosphatase activity hydrolase activity, acting on acid anhydrides, in phosphorus-containing anhydrides hydrolase activity hydrolase activity, acting on acid anhydrides catalytic activity ATP-dependent activity catalytic activity, acting on RNA catalytic activity, acting on a nucleic acid helicase activity RNA helicase activity ATP-dependent activity, acting on RNA identical protein binding protein binding	RNA splicing cellular biosynthetic process cellular metabolic process RNA metabolic process primary metabolic process gene expression nucleobase-containing compound biosynthetic process mRNA processing mRNA metabolic process macromolecule biosynthetic process nucleic acid metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process biosynthetic process RNA splicing cellular biosynthetic process cellular metabolic process RNA metabolic process primary metabolic process gene expression nucleobase-containing compound biosynthetic process mRNA processing mRNA metabolic process macromolecule biosynthetic process nucleic acid metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process biosynthetic process RNA splicing, via transesterification reactions mRNA splicing, via spliceosome metabolic process cellular process RNA splicing, via transesterification reactions with bulged adenosine as nucleophile macromolecule metabolic process RNA processing ribonucleoprotein complex biogenesis protein-RNA complex assembly cellular component organization cellular component biogenesis protein-RNA complex organization cellular component assembly protein-containing complex assembly cellular component organization or biogenesis spliceosome conformational change to release U4 (or U4atac) and U1 (or U11) protein-containing complex organization spliceosomal conformational changes to generate catalytic conformation	membrane-bounded organelle protein-containing complex intracellular anatomical structure nucleus nuclear protein-containing complex intracellular membrane-bounded organelle cellular anatomical entity intracellular organelle spliceosomal complex organelle ribonucleoprotein complex U5 snRNP spliceosomal snRNP complex Sm-like protein family complex membrane-bounded organelle protein-containing complex intracellular anatomical structure nucleus nuclear protein-containing complex intracellular membrane-bounded organelle cellular anatomical entity intracellular organelle spliceosomal complex organelle ribonucleoprotein complex U5 snRNP spliceosomal snRNP complex Sm-like protein family complex small nuclear ribonucleoprotein complex U4/U6 x U5 tri-snRNP complex spliceosomal tri-snRNP complex
F [auth C]	Pre-mRNA-splicing factor SNU114	-	-	-
G [auth D]	Splicing factor YJU2	-	-	-
H [auth E]	5' exon of UBC4 mRNA	-	-	-
I [auth F]	Pre-mRNA-splicing factor CWC25	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
CA [auth b], KA [auth k]	IPR001163	Sm domain, eukaryotic/archaea-type	Domain
CA [auth b], KA [auth k]	IPR047575	Sm domain	Domain
CA [auth b], KA [auth k]	IPR010920	LSM domain superfamily	Homologous Superfamily
CA [auth b], KA [auth k]	IPR050914	Small nuclear ribonucleoprotein-associated SmB/SmN	Family
EA [auth d], NA [auth n]	IPR027141	Like-Sm (LSM) domain containing protein, LSm4/SmD1/SmD3	Family
EA [auth d], NA [auth n]	IPR034099	Small nuclear ribonucleoprotein Sm D3	Family
EA [auth d], NA [auth n]	IPR001163	Sm domain, eukaryotic/archaea-type	Domain
EA [auth d], NA [auth n]	IPR047575	Sm domain	Domain
EA [auth d], NA [auth n]	IPR010920	LSM domain superfamily	Homologous Superfamily
FA [auth e], PA [auth p]	IPR027078	Small nuclear ribonucleoprotein E	Family
FA [auth e], PA [auth p]	IPR001163	Sm domain, eukaryotic/archaea-type	Domain
FA [auth e], PA [auth p]	IPR047575	Sm domain	Domain
FA [auth e], PA [auth p]	IPR010920	LSM domain superfamily	Homologous Superfamily
GA [auth f], QA [auth q]	IPR016487	Sm-like protein Lsm6/SmF	Family
GA [auth f], QA [auth q]	IPR034100	Small nuclear ribonucleoprotein F	Family
GA [auth f], QA [auth q]	IPR001163	Sm domain, eukaryotic/archaea-type	Domain
GA [auth f], QA [auth q]	IPR047575	Sm domain	Domain
GA [auth f], QA [auth q]	IPR010920	LSM domain superfamily	Homologous Superfamily
HA [auth g], RA [auth r]	IPR044641	Sm-like protein Lsm7/SmG	Family
HA [auth g], RA [auth r]	IPR034098	Small nuclear ribonucleoprotein G	Family
HA [auth g], RA [auth r]	IPR001163	Sm domain, eukaryotic/archaea-type	Domain
HA [auth g], RA [auth r]	IPR047575	Sm domain	Domain
HA [auth g], RA [auth r]	IPR010920	LSM domain superfamily	Homologous Superfamily
IA [auth h], LA [auth l]	IPR027141	Like-Sm (LSM) domain containing protein, LSm4/SmD1/SmD3	Family
IA [auth h], LA [auth l]	IPR001163	Sm domain, eukaryotic/archaea-type	Domain
IA [auth h], LA [auth l]	IPR047575	Sm domain	Domain
IA [auth h], LA [auth l]	IPR010920	LSM domain superfamily	Homologous Superfamily
JA [auth j], MA [auth m]	IPR001163	Sm domain, eukaryotic/archaea-type	Domain
JA [auth j], MA [auth m]	IPR047575	Sm domain	Domain
JA [auth j], MA [auth m]	IPR027248	Small nuclear ribonucleoprotein Sm D2	Family
JA [auth j], MA [auth m]	IPR010920	LSM domain superfamily	Homologous Superfamily
D [auth A]	IPR012984	PROCT domain	Domain
D [auth A]	IPR012591	PRO8NT domain	Domain
D [auth A]	IPR019580	Pre-mRNA-processing-splicing factor 8, U6-snRNA-binding	Domain
D [auth A]	IPR027652	Pre-mRNA-processing-splicing factor 8	Family
D [auth A]	IPR043172	Prp8 RNase domain IV, palm region	Homologous Superfamily
D [auth A]	IPR012592	PROCN domain	Domain
D [auth A]	IPR012337	Ribonuclease H-like superfamily	Homologous Superfamily
D [auth A]	IPR043173	Prp8 RNase domain IV, fingers region	Homologous Superfamily
D [auth A]	IPR021983	PRP8 domain IV core	Domain
D [auth A]	IPR019581	Pre-mRNA-processing-splicing factor 8, U5-snRNA-binding	Domain
D [auth A]	IPR037518	MPN domain	Domain
D [auth A]	IPR019582	RNA recognition motif, spliceosomal PrP8	Domain
D [auth A]	IPR042516	Pre-mRNA-processing-splicing factor 8, U5-snRNA-binding domain superfamily	Homologous Superfamily
D [auth A]	IPR000555	JAB1/MPN/MOV34 metalloenzyme domain	Domain
E [auth B]	IPR001650	Helicase, C-terminal domain-like	Domain
E [auth B]	IPR036388	Winged helix-like DNA-binding domain superfamily	Homologous Superfamily
E [auth B]	IPR014001	Helicase superfamily 1/2, ATP-binding domain	Domain
E [auth B]	IPR036390	Winged helix DNA-binding domain superfamily	Homologous Superfamily
E [auth B]	IPR048863	Pre-mRNA-splicing helicase BRR2-like, plug domain	Domain
E [auth B]	IPR041094	Brr2, N-terminal helicase PWI domain	Domain
E [auth B]	IPR004179	Sec63 domain	Domain
E [auth B]	IPR035892	C2 domain superfamily	Homologous Superfamily
E [auth B]	IPR014756	Immunoglobulin E-set	Homologous Superfamily
E [auth B]	IPR050474	Helicase Hel308/SKI2	Family
E [auth B]	IPR011545	DEAD/DEAH box helicase domain	Domain
E [auth B]	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily

Protein Modification Annotation

Modified Residue(s)
Chain	Residue(s)	Description
J [auth G]	UNK
R [auth O]	UNK
Y [auth X]	UNK
OA [auth o]	SEP	Parent Component: SER RESID: AA0037 PSI-MOD : O-phospho-L-serine MOD:00046
G [auth D]	UNK	RESID: AA0037
I [auth F]	UNK	RESID: AA0037