9ZE2 | pdb_00009ze2

Cryo-EM structure of the endogenous U2/branchpoint spliceosomal complex (core)

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
H [auth B4]	SCOP2B Superfamily	RNA-binding domain, RBD	8090834	3000110	SCOP2B (2022-06-29)
G [auth B3]	SCOP2B Superfamily	WD40 repeat-like	8052534	3001694	SCOP2B (2022-06-29)
G [auth B3]	SCOP2B Superfamily	WD40 repeat-like	8052534	3001694	SCOP2B (2022-06-29)
G [auth B3]	SCOP2B Superfamily	WD40 repeat-like	8051197	3001694	SCOP2B (2022-06-29)
G [auth B3]	SCOP2B Superfamily	WD40 repeat-like	8052535	3001694	SCOP2B (2022-06-29)
B [auth H]	SCOP2B Superfamily	Triquetra zinc finger motif	8051848	3002040	SCOP2B (2022-06-29)
J [auth B6]	SCOP2B Superfamily	RNA-binding domain, RBD	8040695	3000110	SCOP2B (2022-06-29)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
H [auth B4]	PF00076	RNA recognition motif (RRM_1)	RNA recognition motif	The RRM motif (a.k.a. RRM, RBD, or RNP domain) is probably diagnostic of an RNA binding protein. RRMs are found in a variety of RNA binding proteins, including various hnRNP proteins, proteins implicated in regulation of alternative splicing, and pro ...	The RRM motif (a.k.a. RRM, RBD, or RNP domain) is probably diagnostic of an RNA binding protein. RRMs are found in a variety of RNA binding proteins, including various hnRNP proteins, proteins implicated in regulation of alternative splicing, and protein components of snRNPs. The motif also appears in a few single stranded DNA binding proteins. The RRM structure consists of four strands and two helices arranged in an alpha/beta sandwich, with a third helix present during RNA binding in some cases The C-terminal beta strand (4th strand) and final helix are hard to align and have been omitted in the SEED alignment The LA proteins (Swiss:P05455) have an N terminal rrm which is included in the seed. There is a second region towards the C terminus that has some features characteristic of a rrm but does not appear to have the important structural core of a rrm. The LA proteins (Swiss:P05455) are one of the main autoantigens in Systemic lupus erythematosus (SLE), an autoimmune disease.	Domain
G [auth B3]	PF10433	RSE1/DDB1/CPSF1 first beta-propeller (Beta-prop_RSE1_1st)	RSE1/DDB1/CPSF1 first beta-propeller	-	Repeat
G [auth B3]	PF23726	RSE1/DDB1/CPSF1 second beta-propeller (Beta-prop_RSE1_2nd)	RSE1/DDB1/CPSF1 second beta-propeller	-	Repeat
G [auth B3]	PF03178	CPSF A subunit region (CPSF_A)	CPSF A subunit region	-	Repeat
F [auth B2]	PF04037	Domain of unknown function (DUF382) (DUF382)	Domain of unknown function (DUF382)	-	Family
F [auth B2]	PF04046	PSP (PSP)	PSP	-	Family
E [auth B1]	PF22646	PPP2R1A-like HEAT repeat (PPP2R1A-like_HEAT)	PPP2R1A-like HEAT repeat	-	Repeat
B [auth H]	PF03660	PHF5-like protein (PHF5)	PHF5-like protein	-	Family
L [auth A3]	PF11931	SF3a60/Prp9 C-terminal (SF3a60_Prp9_C)	SF3a60/Prp9 C-terminal	-	Family
K [auth A2]	PF12874	Zinc-finger of C2H2 type (zf-met)	Zinc-finger of C2H2 type	This is a zinc-finger domain with the CxxCx(12)Hx(6)H motif, found in multiple copies in a wide range of proteins from plants to metazoans. Some member proteins, particularly those from plants, are annotated as being RNA-binding.	Domain
J [auth B6]	PF00076	RNA recognition motif (RRM_1)	RNA recognition motif	The RRM motif (a.k.a. RRM, RBD, or RNP domain) is probably diagnostic of an RNA binding protein. RRMs are found in a variety of RNA binding proteins, including various hnRNP proteins, proteins implicated in regulation of alternative splicing, and pro ...	The RRM motif (a.k.a. RRM, RBD, or RNP domain) is probably diagnostic of an RNA binding protein. RRMs are found in a variety of RNA binding proteins, including various hnRNP proteins, proteins implicated in regulation of alternative splicing, and protein components of snRNPs. The motif also appears in a few single stranded DNA binding proteins. The RRM structure consists of four strands and two helices arranged in an alpha/beta sandwich, with a third helix present during RNA binding in some cases The C-terminal beta strand (4th strand) and final helix are hard to align and have been omitted in the SEED alignment The LA proteins (Swiss:P05455) have an N terminal rrm which is included in the seed. There is a second region towards the C terminus that has some features characteristic of a rrm but does not appear to have the important structural core of a rrm. The LA proteins (Swiss:P05455) are one of the main autoantigens in Systemic lupus erythematosus (SLE), an autoimmune disease.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
I [auth B5]	Splicing factor 3B subunit 5	splicing factor binding protein binding binding RNA binding nucleic acid binding	RNA splicing 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 RNA splicing 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 regulation of cellular process positive regulation of DNA-templated transcription positive regulation of biological process positive regulation of macromolecule biosynthetic process regulation of primary metabolic process positive regulation of metabolic process DNA-templated transcription regulation of RNA metabolic process positive regulation of biosynthetic process positive regulation of macromolecule metabolic process regulation of nucleobase-containing compound metabolic process positive regulation of cellular process regulation of RNA biosynthetic process regulation of biosynthetic process regulation of biological process biological regulation regulation of macromolecule metabolic process positive regulation of RNA metabolic process regulation of gene expression positive regulation of RNA biosynthetic process regulation of macromolecule biosynthetic process regulation of DNA-templated transcription regulation of metabolic process ribonucleoprotein complex biogenesis protein-RNA complex assembly cellular component organization cellular component biogenesis spliceosomal complex assembly protein-RNA complex organization cellular component assembly protein-containing complex assembly cellular component organization or biogenesis protein-containing complex organization U2-type prespliceosome assembly cellular response to stimulus response to stimulus regulation of cellular response to stress cellular response to stress response to stress regulation of response to stress DNA repair DNA metabolic process regulation of DNA repair DNA damage response regulation of response to stimulus regulation of DNA metabolic process regulation of RNA splicing	membrane-bounded organelle U2-type spliceosomal complex protein-containing complex intracellular anatomical structure nucleus nuclear protein-containing complex intracellular membrane-bounded organelle intracellular organelle cellular anatomical structure spliceosomal complex organelle ribonucleoprotein complex catalytic complex peptidase complex membrane-bounded organelle U2-type spliceosomal complex protein-containing complex intracellular anatomical structure nucleus nuclear protein-containing complex intracellular membrane-bounded organelle intracellular organelle cellular anatomical structure spliceosomal complex organelle ribonucleoprotein complex catalytic complex peptidase complex intracellular membraneless organelle chromatin chromosome transferase complex histone acetyltransferase complex acetyltransferase complex membraneless organelle protein acetyltransferase complex SAGA-type complex SAGA complex intracellular protein-containing complex precatalytic spliceosome spliceosomal snRNP complex Sm-like protein family complex small nuclear ribonucleoprotein complex U2 snRNP U2-type precatalytic spliceosome U12-type spliceosomal complex membrane-enclosed lumen intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen
H [auth B4]	Splicing factor 3B subunit 4	splicing factor binding protein binding binding RNA binding nucleic acid binding	RNA splicing RNA metabolic process primary metabolic process gene expression nucleobase-containing compound biosynthetic process macromolecule biosynthetic process nucleic acid metabolic process RNA biosynthetic process nucleobase-containing compound metabolic process nucleic acid biosynthetic process biosynthetic process metabolic process cellular process RNA processing RNA splicing RNA metabolic process primary metabolic process gene expression nucleobase-containing compound biosynthetic process macromolecule biosynthetic process nucleic acid metabolic process RNA biosynthetic process nucleobase-containing compound metabolic process nucleic acid biosynthetic process biosynthetic process metabolic process cellular process RNA processing macromolecule metabolic process mRNA processing mRNA metabolic process RNA splicing, via transesterification reactions mRNA splicing, via spliceosome RNA splicing, via transesterification reactions with bulged adenosine as nucleophile ribonucleoprotein complex biogenesis protein-RNA complex assembly cellular component organization cellular component biogenesis spliceosomal complex assembly protein-RNA complex organization cellular component assembly protein-containing complex assembly cellular component organization or biogenesis protein-containing complex organization U2-type prespliceosome assembly	membrane-bounded organelle U2-type spliceosomal complex protein-containing complex intracellular anatomical structure nucleus nuclear protein-containing complex intracellular membrane-bounded organelle intracellular organelle cellular anatomical structure spliceosomal complex organelle ribonucleoprotein complex precatalytic spliceosome spliceosomal snRNP complex membrane-bounded organelle U2-type spliceosomal complex protein-containing complex intracellular anatomical structure nucleus nuclear protein-containing complex intracellular membrane-bounded organelle intracellular organelle cellular anatomical structure spliceosomal complex organelle ribonucleoprotein complex precatalytic spliceosome spliceosomal snRNP complex Sm-like protein family complex small nuclear ribonucleoprotein complex U2 snRNP U2-type precatalytic spliceosome U12-type spliceosomal complex membrane-enclosed lumen intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen
G [auth B3]	Splicing factor 3B subunit 3	protein-containing complex binding binding RNA binding snRNA binding nucleic acid binding U2 snRNA binding	ribonucleoprotein complex biogenesis 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 ribonucleoprotein complex biogenesis 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 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 regulation of cellular process positive regulation of DNA-templated transcription positive regulation of biological process positive regulation of macromolecule biosynthetic process regulation of primary metabolic process positive regulation of metabolic process DNA-templated transcription regulation of RNA metabolic process positive regulation of biosynthetic process positive regulation of macromolecule metabolic process regulation of nucleobase-containing compound metabolic process positive regulation of cellular process regulation of RNA biosynthetic process regulation of biosynthetic process regulation of biological process biological regulation regulation of macromolecule metabolic process positive regulation of RNA metabolic process regulation of gene expression positive regulation of RNA biosynthetic process regulation of macromolecule biosynthetic process regulation of DNA-templated transcription regulation of metabolic process catabolic process negative regulation of biological process macromolecule catabolic process negative regulation of protein catabolic process negative regulation of cellular process protein metabolic process negative regulation of protein metabolic process negative regulation of macromolecule metabolic process negative regulation of catabolic process regulation of protein metabolic process negative regulation of metabolic process protein catabolic process regulation of catabolic process regulation of protein catabolic process cellular response to stimulus response to stimulus regulation of cellular response to stress cellular response to stress response to stress regulation of response to stress DNA repair DNA metabolic process regulation of DNA repair DNA damage response regulation of response to stimulus regulation of DNA metabolic process regulation of RNA splicing	membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membraneless organelle intracellular membrane-bounded organelle nucleolus intracellular organelle lumen intracellular organelle cellular anatomical structure organelle lumen organelle membraneless organelle nuclear lumen membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membraneless organelle intracellular membrane-bounded organelle nucleolus intracellular organelle lumen intracellular organelle cellular anatomical structure organelle lumen organelle membraneless organelle nuclear lumen spliceosomal snRNP complex protein-containing complex nuclear protein-containing complex Sm-like protein family complex small nuclear ribonucleoprotein complex ribonucleoprotein complex U2 snRNP catalytic step 2 spliceosome catalytic complex spliceosomal complex nucleoplasm U2-type spliceosomal complex peptidase complex chromatin chromosome transferase complex histone acetyltransferase complex acetyltransferase complex protein acetyltransferase complex SAGA-type complex SAGA complex intracellular protein-containing complex U2-type precatalytic spliceosome precatalytic spliceosome U12-type spliceosomal complex
F [auth B2]	Splicing factor 3B subunit 2	RNA binding binding nucleic acid binding	RNA splicing RNA metabolic process primary metabolic process gene expression nucleobase-containing compound biosynthetic process macromolecule biosynthetic process nucleic acid metabolic process RNA biosynthetic process nucleobase-containing compound metabolic process nucleic acid biosynthetic process biosynthetic process metabolic process cellular process RNA processing RNA splicing RNA metabolic process primary metabolic process gene expression nucleobase-containing compound biosynthetic process macromolecule biosynthetic process nucleic acid metabolic process RNA biosynthetic process nucleobase-containing compound metabolic process nucleic acid biosynthetic process biosynthetic process metabolic process cellular process RNA processing macromolecule metabolic process mRNA processing mRNA metabolic process RNA splicing, via transesterification reactions mRNA splicing, via spliceosome RNA splicing, via transesterification reactions with bulged adenosine as nucleophile ribonucleoprotein complex biogenesis protein-RNA complex assembly cellular component organization cellular component biogenesis spliceosomal complex assembly protein-RNA complex organization cellular component assembly protein-containing complex assembly cellular component organization or biogenesis protein-containing complex organization U2-type prespliceosome assembly	membrane-bounded organelle U2-type spliceosomal complex protein-containing complex intracellular anatomical structure nucleus nuclear protein-containing complex intracellular membrane-bounded organelle intracellular organelle cellular anatomical structure spliceosomal complex organelle ribonucleoprotein complex precatalytic spliceosome membrane-enclosed lumen membrane-bounded organelle U2-type spliceosomal complex protein-containing complex intracellular anatomical structure nucleus nuclear protein-containing complex intracellular membrane-bounded organelle intracellular organelle cellular anatomical structure spliceosomal complex organelle ribonucleoprotein complex precatalytic spliceosome membrane-enclosed lumen intracellular membraneless organelle intracellular organelle lumen nuclear speck ribonucleoprotein granule nuclear body nucleoplasm organelle lumen membraneless organelle supramolecular complex nuclear ribonucleoprotein granule nuclear lumen spliceosomal snRNP complex Sm-like protein family complex small nuclear ribonucleoprotein complex U2 snRNP catalytic step 2 spliceosome catalytic complex U2-type precatalytic spliceosome U12-type spliceosomal complex
E [auth B1]	Splicing factor 3B subunit 1	RNA binding binding nucleic acid binding mRNA binding splicing factor binding protein binding	ribonucleoprotein complex biogenesis 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 ribonucleoprotein complex biogenesis 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 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 regulation of cellular process positive regulation of DNA-templated transcription positive regulation of biological process positive regulation of macromolecule biosynthetic process regulation of primary metabolic process positive regulation of metabolic process DNA-templated transcription regulation of RNA metabolic process positive regulation of biosynthetic process transcription by RNA polymerase I positive regulation of macromolecule metabolic process regulation of nucleobase-containing compound metabolic process positive regulation of transcription by RNA polymerase I positive regulation of cellular process regulation of RNA biosynthetic process regulation of biosynthetic process regulation of biological process regulation of transcription by RNA polymerase I biological regulation regulation of macromolecule metabolic process positive regulation of RNA metabolic process regulation of gene expression positive regulation of RNA biosynthetic process regulation of macromolecule biosynthetic process regulation of DNA-templated transcription regulation of metabolic process positive regulation of transcription by RNA polymerase III transcription by RNA polymerase III regulation of transcription by RNA polymerase III transcription by RNA polymerase II regulation of transcription by RNA polymerase II positive regulation of transcription by RNA polymerase II chromatin organization chromatin remodeling	membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membraneless organelle intracellular membrane-bounded organelle nucleolus intracellular organelle lumen intracellular organelle cellular anatomical structure organelle lumen organelle membraneless organelle nuclear lumen membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membraneless organelle intracellular membrane-bounded organelle nucleolus intracellular organelle lumen intracellular organelle cellular anatomical structure organelle lumen organelle membraneless organelle nuclear lumen nuclear speck ribonucleoprotein granule nuclear body nucleoplasm supramolecular complex nuclear ribonucleoprotein granule spliceosomal snRNP complex protein-containing complex nuclear protein-containing complex Sm-like protein family complex small nuclear ribonucleoprotein complex ribonucleoprotein complex U2 snRNP catalytic step 2 spliceosome catalytic complex spliceosomal complex U11/U12 snRNP U2-type spliceosomal complex U2-type precatalytic spliceosome precatalytic spliceosome U12-type spliceosomal complex ATPase complex B-WICH complex chromatin chromosome SWI/SNF superfamily-type complex prespliceosome U2-type prespliceosome
D [auth A]	RNA-binding protein 5	RNA binding binding nucleic acid binding DNA binding mRNA binding cation binding transition metal ion binding zinc ion binding ion binding metal ion binding small molecule binding	regulation of cellular process alternative mRNA splicing, via spliceosome RNA metabolic process regulation of mRNA splicing, via spliceosome mRNA processing regulation of primary metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process regulation of RNA metabolic process RNA processing regulation of nucleobase-containing compound metabolic process regulation of biosynthetic process regulation of mRNA processing regulation of cellular process alternative mRNA splicing, via spliceosome RNA metabolic process regulation of mRNA splicing, via spliceosome mRNA processing regulation of primary metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process regulation of RNA metabolic process RNA processing regulation of nucleobase-containing compound metabolic process regulation of biosynthetic process regulation of mRNA processing RNA splicing regulation of biological process biological regulation primary metabolic process regulation of macromolecule metabolic process gene expression nucleobase-containing compound biosynthetic process regulation of RNA splicing mRNA metabolic process macromolecule biosynthetic process nucleic acid metabolic process regulation of gene expression biosynthetic process RNA splicing, via transesterification reactions regulation of alternative mRNA splicing, via spliceosome mRNA splicing, via spliceosome metabolic process cellular process RNA splicing, via transesterification reactions with bulged adenosine as nucleophile regulation of macromolecule biosynthetic process macromolecule metabolic process regulation of mRNA metabolic process regulation of metabolic process apoptotic process cell death programmed cell death positive regulation of programmed cell death regulation of apoptotic process positive regulation of biological process regulation of programmed cell death positive regulation of apoptotic process positive regulation of cellular process ribonucleoprotein complex biogenesis protein-RNA complex assembly cellular component organization cellular component biogenesis spliceosomal complex assembly protein-RNA complex organization cellular component assembly protein-containing complex assembly cellular component organization or biogenesis protein-containing complex organization negative regulation of cell population proliferation cell population proliferation regulation of cell population proliferation negative regulation of cellular process negative regulation of biological process	sperm end piece membrane-bounded organelle cell projection cellular anatomical structure organelle cilium 9+2 motile cilium sperm flagellum motile cilium plasma membrane bounded cell projection intracellular organelle microtubule organizing center intracellular anatomical structure cytoskeleton sperm end piece membrane-bounded organelle cell projection cellular anatomical structure organelle cilium 9+2 motile cilium sperm flagellum motile cilium plasma membrane bounded cell projection intracellular organelle microtubule organizing center intracellular anatomical structure cytoskeleton membraneless organelle centriole intracellular membraneless organelle microtubule cytoskeleton cytoplasm cytosol sperm principal piece perinuclear theca perinuclear region of cytoplasm sperm midpiece nucleus membrane-enclosed lumen intracellular membrane-bounded organelle intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen protein-containing complex nuclear protein-containing complex spliceosomal complex ribonucleoprotein complex
C [auth R]	pre-mRNA	-	-	-
B [auth H]	PHD finger-like domain-containing protein 5A	DNA binding binding nucleic acid binding cation binding transition metal ion binding zinc ion binding ion binding metal ion binding small molecule binding RNA binding	RNA splicing 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 RNA splicing 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 regulation of cellular process positive regulation of DNA-templated transcription positive regulation of biological process positive regulation of macromolecule biosynthetic process regulation of primary metabolic process positive regulation of metabolic process DNA-templated transcription regulation of RNA metabolic process positive regulation of biosynthetic process positive regulation of macromolecule metabolic process regulation of nucleobase-containing compound metabolic process positive regulation of cellular process regulation of RNA biosynthetic process regulation of biosynthetic process regulation of biological process biological regulation regulation of macromolecule metabolic process positive regulation of RNA metabolic process regulation of gene expression positive regulation of RNA biosynthetic process regulation of macromolecule biosynthetic process regulation of DNA-templated transcription regulation of metabolic process ribonucleoprotein complex biogenesis protein-RNA complex assembly cellular component organization cellular component biogenesis spliceosomal complex assembly protein-RNA complex organization cellular component assembly protein-containing complex assembly cellular component organization or biogenesis protein-containing complex organization U2-type prespliceosome assembly developmental process stem cell differentiation cellular developmental process cell differentiation	membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membrane-bounded organelle intracellular organelle lumen intracellular organelle cellular anatomical structure organelle lumen organelle nuclear lumen nuclear matrix U2-type spliceosomal complex protein-containing complex membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membrane-bounded organelle intracellular organelle lumen intracellular organelle cellular anatomical structure organelle lumen organelle nuclear lumen nuclear matrix U2-type spliceosomal complex protein-containing complex nuclear protein-containing complex spliceosomal complex ribonucleoprotein complex precatalytic spliceosome intracellular membraneless organelle nuclear speck ribonucleoprotein granule nuclear body nucleoplasm membraneless organelle supramolecular complex nuclear ribonucleoprotein granule spliceosomal snRNP complex Sm-like protein family complex small nuclear ribonucleoprotein complex U2 snRNP U2-type precatalytic spliceosome U12-type spliceosomal complex
L [auth A3]	Splicing factor 3A subunit 3	cation binding transition metal ion binding zinc ion binding ion binding binding metal ion binding small molecule binding RNA binding nucleic acid binding	RNA splicing 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 RNA splicing 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 spliceosomal complex assembly protein-RNA complex organization cellular component assembly protein-containing complex assembly cellular component organization or biogenesis protein-containing complex organization U2-type prespliceosome assembly mRNA splice site recognition mRNA 3'-splice site recognition	membrane-bounded organelle U2-type spliceosomal complex protein-containing complex intracellular anatomical structure nucleus nuclear protein-containing complex intracellular membrane-bounded organelle intracellular organelle cellular anatomical structure spliceosomal complex organelle ribonucleoprotein complex membrane-enclosed lumen intracellular membraneless organelle membrane-bounded organelle U2-type spliceosomal complex protein-containing complex intracellular anatomical structure nucleus nuclear protein-containing complex intracellular membrane-bounded organelle intracellular organelle cellular anatomical structure spliceosomal complex organelle ribonucleoprotein complex membrane-enclosed lumen intracellular membraneless organelle intracellular organelle lumen nuclear speck ribonucleoprotein granule nuclear body nucleoplasm organelle lumen membraneless organelle supramolecular complex nuclear ribonucleoprotein granule nuclear lumen spliceosomal snRNP complex Sm-like protein family complex small nuclear ribonucleoprotein complex U2 snRNP catalytic step 2 spliceosome catalytic complex U2-type precatalytic spliceosome precatalytic spliceosome
K [auth A2]	Splicing factor 3A subunit 2	cation binding transition metal ion binding zinc ion binding ion binding binding metal ion binding small molecule binding RNA binding nucleic acid binding	regulation of neuron projection development multicellular organismal process regulation of cellular component organization regulation of cellular process positive regulation of cellular component organization cellular developmental process cell projection organization positive regulation of biological process cell development neuron projection development cellular component organization neurogenesis multicellular organism development neuron differentiation positive regulation of neuron projection development regulation of neuron projection development multicellular organismal process regulation of cellular component organization regulation of cellular process positive regulation of cellular component organization cellular developmental process cell projection organization positive regulation of biological process cell development neuron projection development cellular component organization neurogenesis multicellular organism development neuron differentiation positive regulation of neuron projection development cell differentiation anatomical structure development positive regulation of cell projection organization cellular component organization or biogenesis positive regulation of cellular process system development developmental process regulation of biological process plasma membrane bounded cell projection organization regulation of cell projection organization biological regulation nervous system development generation of neurons neuron development cellular process regulation of plasma membrane bounded cell projection organization ribonucleoprotein complex biogenesis RNA metabolic process mRNA processing protein-RNA complex assembly 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 RNA processing RNA splicing protein-containing complex organization 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 metabolic process RNA splicing, via transesterification reactions with bulged adenosine as nucleophile macromolecule metabolic process U2-type prespliceosome assembly mRNA splice site recognition mRNA 3'-splice site recognition	membrane-bounded organelle U2-type spliceosomal complex protein-containing complex intracellular anatomical structure nucleus nuclear protein-containing complex intracellular membrane-bounded organelle intracellular organelle cellular anatomical structure spliceosomal complex organelle ribonucleoprotein complex membrane-enclosed lumen intracellular membraneless organelle membrane-bounded organelle U2-type spliceosomal complex protein-containing complex intracellular anatomical structure nucleus nuclear protein-containing complex intracellular membrane-bounded organelle intracellular organelle cellular anatomical structure spliceosomal complex organelle ribonucleoprotein complex membrane-enclosed lumen intracellular membraneless organelle intracellular organelle lumen nuclear speck ribonucleoprotein granule nuclear body nucleoplasm organelle lumen membraneless organelle supramolecular complex nuclear ribonucleoprotein granule nuclear lumen spliceosomal snRNP complex Sm-like protein family complex small nuclear ribonucleoprotein complex U2 snRNP catalytic step 2 spliceosome catalytic complex U2-type precatalytic spliceosome precatalytic spliceosome prespliceosome U2-type prespliceosome
J [auth B6]	Splicing factor 3B subunit 6	RNA binding binding nucleic acid binding mRNA binding	developmental process multicellular organismal process chordate embryonic development embryo development in utero embryonic development multicellular organism development anatomical structure morphogenesis blastocyst formation embryo development ending in birth or egg hatching anatomical structure development anatomical structure formation involved in morphogenesis blastocyst development RNA splicing RNA metabolic process developmental process multicellular organismal process chordate embryonic development embryo development in utero embryonic development multicellular organism development anatomical structure morphogenesis blastocyst formation embryo development ending in birth or egg hatching anatomical structure development anatomical structure formation involved in morphogenesis blastocyst development RNA splicing 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 spliceosomal complex assembly protein-RNA complex organization cellular component assembly protein-containing complex assembly cellular component organization or biogenesis protein-containing complex organization U2-type prespliceosome assembly	membrane-bounded organelle U2-type spliceosomal complex protein-containing complex intracellular anatomical structure nucleus nuclear protein-containing complex intracellular membrane-bounded organelle intracellular organelle cellular anatomical structure spliceosomal complex organelle ribonucleoprotein complex spliceosomal snRNP complex Sm-like protein family complex membrane-bounded organelle U2-type spliceosomal complex protein-containing complex intracellular anatomical structure nucleus nuclear protein-containing complex intracellular membrane-bounded organelle intracellular organelle cellular anatomical structure spliceosomal complex organelle ribonucleoprotein complex spliceosomal snRNP complex Sm-like protein family complex small nuclear ribonucleoprotein complex U2 snRNP U12-type spliceosomal complex membrane-enclosed lumen intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen
A [auth 2]	U2 snRNA	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
I [auth B5]	IPR017089	Splicing factor 3B, subunit 5	Family
I [auth B5]	IPR009846	Splicing factor 3B subunit 5/RDS3 complex subunit 10	Family
H [auth B4]	IPR034159	SF3B4, RNA recognition motif 2	Domain
H [auth B4]	IPR000504	RNA recognition motif domain	Domain
H [auth B4]	IPR012677	Nucleotide-binding alpha-beta plait domain superfamily	Homologous Superfamily
H [auth B4]	IPR035979	RNA-binding domain superfamily	Homologous Superfamily
H [auth B4]	IPR034158	SF3B4, RNA recognition motif 1	Domain
H [auth B4]	IPR052084	Spliceosome-associated SF3B4 subunit	Family
G [auth B3]	IPR050358	RSE1/DDB1/CPSF1	Family
G [auth B3]	IPR015943	WD40/YVTN repeat-like-containing domain superfamily	Homologous Superfamily
G [auth B3]	IPR036322	WD40-repeat-containing domain superfamily	Homologous Superfamily
G [auth B3]	IPR018846	RSE1/DDB1/CPSF1, first beta-propeller	Domain
G [auth B3]	IPR058543	RSE1/DDB1/CPSF1, second beta-propeller	Domain
G [auth B3]	IPR004871	RSE1/DDB1/CPSF1, C-terminal	Domain
F [auth B2]	IPR006568	PSP, proline-rich	Domain
F [auth B2]	IPR007180	Domain of unknown function DUF382	Domain
F [auth B2]	IPR003034	SAP domain	Domain
F [auth B2]	IPR052584	Pre-mRNA Spliceosomal U2 snRNP Complex Component	Family
E [auth B1]	IPR054573	Phosphatase PP2A regulatory subunit A/Splicing factor 3B subunit 1-like, HEAT repeat	Domain
E [auth B1]	IPR016024	Armadillo-type fold	Homologous Superfamily
E [auth B1]	IPR011989	Armadillo-like helical	Homologous Superfamily
E [auth B1]	IPR015016	Splicing factor 3B subunit 1	Domain
E [auth B1]	IPR038737	Splicing factor 3B subunit 1-like	Family
D [auth A]	IPR013087	Zinc finger C2H2-type	Domain
D [auth A]	IPR034993	RNA-binding protein 5, RNA recognition motif 2	Domain
D [auth A]	IPR000467	G-patch domain	Domain
D [auth A]	IPR036443	Zinc finger, RanBP2-type superfamily	Homologous Superfamily
D [auth A]	IPR000504	RNA recognition motif domain	Domain
D [auth A]	IPR041591	OCRE domain	Domain
D [auth A]	IPR012677	Nucleotide-binding alpha-beta plait domain superfamily	Homologous Superfamily
D [auth A]	IPR001876	Zinc finger, RanBP2-type	Domain
D [auth A]	IPR034991	RNA-binding protein 5, RNA recognition motif 1	Domain
D [auth A]	IPR035979	RNA-binding domain superfamily	Homologous Superfamily
B [auth H]	IPR005345	PHF5-like	Family
L [auth A3]	IPR021966	Splicing factor SF3a60 binding domain	Domain
L [auth A3]	IPR031774	SF3A3 domain	Domain
L [auth A3]	IPR024598	Splicing factor SF3a60 /Prp9 subunit, C-terminal	Domain
L [auth A3]	IPR025086	SDE2/SF3A3, SAP domain	Domain
L [auth A3]	IPR000690	Matrin/U1-C, C2H2-type zinc finger	Domain
L [auth A3]	IPR051421	RNA Processing and DNA Damage Response Regulator	Family
K [auth A2]	IPR031781	SF3A2 domain	Domain
K [auth A2]	IPR003604	Matrin/U1-C-like, C2H2-type zinc finger	Domain
K [auth A2]	IPR013087	Zinc finger C2H2-type	Domain
K [auth A2]	IPR052092	Splicing Factor 3A Subunit 2	Family
K [auth A2]	IPR036236	Zinc finger C2H2 superfamily	Homologous Superfamily
K [auth A2]	IPR000690	Matrin/U1-C, C2H2-type zinc finger	Domain
J [auth B6]	IPR000504	RNA recognition motif domain	Domain
J [auth B6]	IPR050374	RRT5/SRSF/Splicing Factor SR	Family
J [auth B6]	IPR012677	Nucleotide-binding alpha-beta plait domain superfamily	Homologous Superfamily
J [auth B6]	IPR034150	SF3B6, RNA recognition motif	Domain
J [auth B6]	IPR035979	RNA-binding domain superfamily	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
I [auth B5]	: Q9BWJ5	diabetes mellitus pancreatic ductal adenocarcinoma glioblastoma Sjogren syndrome ovarian cancer
H [auth B4]	: Q15427	Nager acrofacial dysostosis acrofacial dysostosis Rodriguez type breast carcinoma intellectual disability malignant glioma oligodendroglioma pancreatic intraductal papillary-mucinous neoplasm astrocytic tumor glioblastoma large cell medulloblastoma malignant mesothelioma ovarian cancer Radial club hand atypical teratoid rhabdoid tumor idiopathic scoliosis Nager acrofacial dysostosis acrofacial dysostosis Rodriguez type breast carcinoma intellectual disability malignant glioma oligodendroglioma pancreatic intraductal papillary-mucinous neoplasm astrocytic tumor glioblastoma large cell medulloblastoma malignant mesothelioma ovarian cancer Radial club hand atypical teratoid rhabdoid tumor idiopathic scoliosis malignant ependymoma pancreatic ductal adenocarcinoma
G [auth B3]	: Q15393	astrocytic tumor Intractable Eczema lung cancer atopic eczema large cell medulloblastoma malignant colon neoplasm atypical teratoid rhabdoid tumor ovarian cancer
F [auth B2]	: Q13435	astrocytic tumor ovarian cancer bipolar I disorder plasma cell myeloma obesity disorder
E [auth B1]	: O75533	B-cell chronic lymphocytic leukemia uveal melanoma myelodysplastic syndrome malignant mesothelioma prostate cancer ocular melanoma ovarian cancer primitive neuroectodermal tumor abdominal aortic aneurysm Prostatic Neoplasms anorexia nervosa thoracic aortic aneurysm autism spectrum disorder brain aneurysm malignant ependymoma B-cell chronic lymphocytic leukemia uveal melanoma myelodysplastic syndrome malignant mesothelioma prostate cancer ocular melanoma ovarian cancer primitive neuroectodermal tumor abdominal aortic aneurysm Prostatic Neoplasms anorexia nervosa thoracic aortic aneurysm autism spectrum disorder brain aneurysm malignant ependymoma medulloblastoma oligodendroglioma pancreatic ductal adenocarcinoma progressive supranuclear palsy acute myeloid leukemia psoriasis astrocytic tumor cancer Gaucher disease large cell medulloblastoma osteosarcoma Pick disease allergic rhinitis atypical teratoid rhabdoid tumor bipolar disorder congenital anemia glioblastoma malignant choroid melanoma
D [auth A]	: P52756	astrocytic tumor Gaucher disease metabolic syndrome X ovarian cancer Pick disease attention deficit hyperactivity disorder, inattentive type interstitial lung disease oligodendroglioma pancreatic intraductal papillary-mucinous carcinoma progressive supranuclear palsy breast cancer malignant ependymoma osteosarcoma pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia psoriasis
B [auth H]	: Q7RTV0	allergic rhinitis vitiligo Crohn disease osteosarcoma
L [auth A3]	: Q12874	HIV infectious disease astrocytic tumor diabetes mellitus HIV Coinfection ovarian cancer colorectal adenoma Hashimoto thyroiditis colorectal cancer heart disease malignant mesothelioma
K [auth A2]	: Q15428	astrocytic tumor glioblastoma medulloblastoma primitive neuroectodermal tumor atypical teratoid rhabdoid tumor large cell medulloblastoma myocardial infarction psoriasis Gaucher disease malignant mesothelioma ovarian cancer
J [auth B6]	: Q9Y3B4	breast cancer ovarian cancer endogenous depression medulloblastoma

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RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.