Annotations: 5CK3

Signal recognition particle receptor SRb-GTP/SRX complex from Chaetomium thermophilum

External Resource: Annotation

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

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	SRP alpha N-terminal domain-like	8073678	4003710	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	SNARE-like	8073679	3001113	SCOP2 (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
F	T_Ag_DNA_bind	e5ck3F1	A: beta barrels	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: RNA polymerase I subunits A49/A34.5 dimerization domains	F: T_Ag_DNA_bind	ECOD (v294.2)
D	NAGLU_N	e5ck3D1	A: beta barrels	X: Lipocalins/Streptavidin	H: SAM/DNA-glycosylase	T: SAM domain-like	F: NAGLU_N	ECOD (v294.2)
B	T_Ag_DNA_bind	e5ck3B1	A: beta barrels	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: RNA polymerase I subunits A49/A34.5 dimerization domains	F: T_Ag_DNA_bind	ECOD (v294.2)
E	T_Ag_DNA_bind	e5ck3E1	A: beta barrels	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: RNA polymerase I subunits A49/A34.5 dimerization domains	F: T_Ag_DNA_bind	ECOD (v294.2)
C	T_Ag_DNA_bind	e5ck3C1	A: beta barrels	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: RNA polymerase I subunits A49/A34.5 dimerization domains	F: T_Ag_DNA_bind	ECOD (v294.2)
A	T_Ag_DNA_bind	e5ck3A1	A: beta barrels	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: RNA polymerase I subunits A49/A34.5 dimerization domains	F: T_Ag_DNA_bind	ECOD (v294.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
F	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases	CATH (4.3.0)
E	3.30.450.60	Alpha Beta	2-Layer Sandwich	Beta-Lactamase		CATH (4.3.0)
C	3.30.450.60	Alpha Beta	2-Layer Sandwich	Beta-Lactamase		CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, C, E	PF04086	Signal recognition particle, alpha subunit, N-terminal (SRP-alpha_N)	Signal recognition particle, alpha subunit, N-terminal	SRP is a complex of six distinct polypeptides and a 7S RNA that is essential for transferring nascent polypeptide chains that are destined for export from the cell to the translocation apparatus of the endoplasmic reticulum (ER) membrane [1]. SRP bin ...	SRP is a complex of six distinct polypeptides and a 7S RNA that is essential for transferring nascent polypeptide chains that are destined for export from the cell to the translocation apparatus of the endoplasmic reticulum (ER) membrane [1]. SRP binds hydrophobic signal sequences as they emerge from the ribosome, and arrests translation. This entry represents the N-terminal domain of the alpha subunit (SRPA), which is responsible for tethering the SRPA to the ER membrane bound subunit beta (SRPB or SRbeta) [2,3].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B, D, F	Putative signal recognition particle protein	binding guanyl nucleotide binding GTP binding nucleotide binding guanyl ribonucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding binding guanyl nucleotide binding GTP binding nucleotide binding guanyl ribonucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding cation binding metal ion binding	-	membrane-bounded organelle intracellular anatomical structure organelle subcompartment membrane intracellular membrane-bounded organelle endomembrane system endoplasmic reticulum subcompartment intracellular organelle cellular anatomical structure organelle nuclear outer membrane-endoplasmic reticulum membrane network endoplasmic reticulum cytoplasm organelle membrane membrane-bounded organelle intracellular anatomical structure organelle subcompartment membrane intracellular membrane-bounded organelle endomembrane system endoplasmic reticulum subcompartment intracellular organelle cellular anatomical structure organelle nuclear outer membrane-endoplasmic reticulum membrane network endoplasmic reticulum cytoplasm organelle membrane endoplasmic reticulum membrane
A, C, E	SRX domain	ribonucleoprotein complex binding protein-containing complex binding binding signal recognition particle binding guanyl nucleotide binding GTP binding nucleotide binding guanyl ribonucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding ribonucleoprotein complex binding protein-containing complex binding binding signal recognition particle binding guanyl nucleotide binding GTP binding nucleotide binding guanyl ribonucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding adenyl ribonucleotide binding adenyl nucleotide binding ATP binding protein serine/threonine kinase activity catalytic activity, acting on a protein kinase activity protein kinase activity transferase activity catalytic activity phosphotransferase activity, alcohol group as acceptor transferase activity, transferring phosphorus-containing groups pyrophosphatase activity GTPase activity ribonucleoside triphosphate phosphatase activity hydrolase activity, acting on acid anhydrides, in phosphorus-containing anhydrides hydrolase activity hydrolase activity, acting on acid anhydrides	establishment of protein localization cellular localization establishment of protein localization to membrane protein targeting localization within membrane establishment of localization protein targeting to membrane localization SRP-dependent cotranslational protein targeting to membrane establishment of protein localization to organelle cotranslational protein targeting to membrane cellular process establishment of protein localization to endoplasmic reticulum protein targeting to ER establishment of protein localization cellular localization establishment of protein localization to membrane protein targeting localization within membrane establishment of localization protein targeting to membrane localization SRP-dependent cotranslational protein targeting to membrane establishment of protein localization to organelle cotranslational protein targeting to membrane cellular process establishment of protein localization to endoplasmic reticulum protein targeting to ER telomere organization chromosome organization primary metabolic process DNA metabolic process nucleic acid metabolic process telomere maintenance cellular component organization nucleobase-containing compound metabolic process organelle organization metabolic process cellular component organization or biogenesis macromolecule metabolic process transport intracellular transport protein transport establishment of localization in cell macromolecule localization intracellular protein localization intracellular protein transport cellular response to stimulus response to stimulus cellular response to stress DNA damage response response to stress DNA repair sexual reproduction reproductive process meiotic cell cycle cell cycle DNA damage checkpoint signaling regulation of cellular process regulation of cell cycle phase transition signaling negative regulation of biological process negative regulation of cell cycle cell cycle phase transition intracellular signal transduction cell communication negative regulation of cellular process negative regulation of cell cycle phase transition signal transduction regulation of cell cycle cell cycle process regulation of biological process regulation of cell cycle process biological regulation DNA integrity checkpoint signaling negative regulation of cell cycle process cell cycle checkpoint signaling signal transduction in response to DNA damage chromatin organization	membrane-bounded organelle protein-containing complex intracellular anatomical structure organelle subcompartment membrane membrane protein complex intracellular membrane-bounded organelle endomembrane system rough endoplasmic reticulum endoplasmic reticulum subcompartment intracellular organelle cellular anatomical structure bounding membrane of organelle rough endoplasmic reticulum membrane membrane-bounded organelle protein-containing complex intracellular anatomical structure organelle subcompartment membrane membrane protein complex intracellular membrane-bounded organelle endomembrane system rough endoplasmic reticulum endoplasmic reticulum subcompartment intracellular organelle cellular anatomical structure bounding membrane of organelle rough endoplasmic reticulum membrane organelle nuclear outer membrane-endoplasmic reticulum membrane network endoplasmic reticulum signal recognition particle receptor complex cytoplasm organelle membrane endoplasmic reticulum protein-containing complex endoplasmic reticulum membrane membraneless organelle intracellular membraneless organelle chromosome nucleus

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B, D, F	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
B, D, F	IPR019009	Signal recognition particle receptor, beta subunit	Family
A, C, E	IPR058681	Serine/threonine-protein kinase MEC1, HEAT repeats	Domain
A, C, E	IPR000897	Signal recognition particle, SRP54 subunit, GTPase domain	Domain
A, C, E	IPR056802	Serine/threonine-protein kinase ATR-like, M-HEAT region	Domain
A, C, E	IPR016024	Armadillo-type fold	Homologous Superfamily
A, C, E	IPR011990	Tetratricopeptide-like helical domain superfamily	Homologous Superfamily
A, C, E	IPR003152	FATC domain	Domain
A, C, E	IPR012993	UME domain	Domain
A, C, E	IPR003593	AAA+ ATPase domain	Domain
A, C, E	IPR000403	Phosphatidylinositol 3-/4-kinase, catalytic domain	Domain
A, C, E	IPR013822	Signal recognition particle SRP54, helical bundle	Domain
A, C, E	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
A, C, E	IPR050517	DNA Damage Response and Repair Kinase	Family
A, C, E	IPR036225	SRP/SRP receptor, N-terminal	Homologous Superfamily
A, C, E	IPR003151	PIK-related kinase, FAT	Domain
A, C, E	IPR036940	Phosphatidylinositol 3-/4-kinase, catalytic domain superfamily	Homologous Superfamily
A, C, E	IPR011012	Longin-like domain superfamily	Homologous Superfamily
A, C, E	IPR057564	Serine/threonine-protein kinase ATR-like, HEAT repeats	Domain
A, C, E	IPR011009	Protein kinase-like domain superfamily	Homologous Superfamily
A, C, E	IPR042101	Signal recognition particle SRP54, N-terminal domain superfamily	Homologous Superfamily
A, C, E	IPR007222	Signal recognition particle receptor, alpha subunit, N-terminal	Domain
A, C, E	IPR014009	PIK-related kinase, FAT domain	Domain