5L3Q

Structure of the GTPase heterodimer of human SRP54 and SRalpha

External Resource: Annotation

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

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	SRP54_N	e5l3qA1	A: alpha bundles	X: Domain of the SRP/SRP receptor G proteins-like	H: Domain of the SRP/SRP receptor G-proteins (From Topology)	T: Domain of the SRP/SRP receptor G-proteins	F: SRP54_N	ECOD (1.6)
A	SRP54	e5l3qA2	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: SRP54	ECOD (1.6)
C	SRP54_N	e5l3qC2	A: alpha bundles	X: Domain of the SRP/SRP receptor G proteins-like	H: Domain of the SRP/SRP receptor G-proteins (From Topology)	T: Domain of the SRP/SRP receptor G-proteins	F: SRP54_N	ECOD (1.6)
C	SRP54	e5l3qC1	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: SRP54	ECOD (1.6)
B	SRP54_N	e5l3qB2	A: alpha bundles	X: Domain of the SRP/SRP receptor G proteins-like	H: Domain of the SRP/SRP receptor G-proteins (From Topology)	T: Domain of the SRP/SRP receptor G-proteins	F: SRP54_N	ECOD (1.6)
B	SRP54	e5l3qB1	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: SRP54	ECOD (1.6)
D	SRP54_N	e5l3qD1	A: alpha bundles	X: Domain of the SRP/SRP receptor G proteins-like	H: Domain of the SRP/SRP receptor G-proteins (From Topology)	T: Domain of the SRP/SRP receptor G-proteins	F: SRP54_N	ECOD (1.6)
D	SRP54	e5l3qD2	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: SRP54	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.20.120.140	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	SRP54, nucleotide-binding domain	CATH (4.3.0)
A	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases	CATH (4.3.0)
C	1.20.120.140	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	SRP54, nucleotide-binding domain	CATH (4.3.0)
C	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases	CATH (4.3.0)
B	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases	CATH (4.3.0)
D	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, C	PF00448	SRP54-type protein, GTPase domain (SRP54)	SRP54-type protein, GTPase domain	This family includes relatives of the G-domain of the SRP54 family of proteins.	Domain
B, D	PF00448	SRP54-type protein, GTPase domain (SRP54)	SRP54-type protein, GTPase domain	This family includes relatives of the G-domain of the SRP54 family of proteins.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, C	Signal recognition particle 54 kDa protein	endoplasmic reticulum signal peptide binding signal sequence binding binding peptide binding ribonucleoprotein complex binding protein-containing complex binding RNA binding organic cyclic compound binding nucleic acid binding guanyl nucleotide binding GTP binding nucleotide binding guanyl ribonucleotide binding purine ribonucleotide binding endoplasmic reticulum signal peptide binding signal sequence binding binding peptide binding ribonucleoprotein complex binding protein-containing complex binding RNA binding organic cyclic compound binding nucleic acid 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 GDP binding 7S RNA 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 GTPase activity	protein localization establishment of protein localization cellular localization establishment of protein localization to membrane protein targeting localization within membrane protein localization to membrane establishment of localization protein targeting to membrane localization SRP-dependent cotranslational protein targeting to membrane establishment of protein localization to organelle cellular macromolecule localization macromolecule localization protein localization to organelle protein localization establishment of protein localization cellular localization establishment of protein localization to membrane protein targeting localization within membrane protein localization to membrane establishment of localization protein targeting to membrane localization SRP-dependent cotranslational protein targeting to membrane establishment of protein localization to organelle cellular macromolecule localization macromolecule localization protein localization to organelle cotranslational protein targeting to membrane cellular process establishment of protein localization to endoplasmic reticulum protein localization to endoplasmic reticulum protein targeting to ER cell chemotaxis cellular response to stimulus chemotaxis response to stimulus neutrophil chemotaxis response to external stimulus neutrophil migration granulocyte migration leukocyte migration cellular response to chemical stimulus taxis immune system process granulocyte chemotaxis response to chemical myeloid leukocyte migration cell migration cell motility leukocyte chemotaxis locomotion developmental process myeloid leukocyte differentiation cellular developmental process hemopoiesis cell development granulocyte differentiation myeloid cell differentiation cell differentiation anatomical structure development leukocyte differentiation cellular component organization cellular component biogenesis cellular component assembly protein-containing complex assembly cellular component organization or biogenesis SRP-dependent cotranslational protein targeting to membrane, signal sequence recognition protein-containing complex organization multicellular organismal process digestive system development gland development animal organ development exocrine pancreas development multicellular organism development pancreas development exocrine system development system development nitrogen compound transport transport protein transmembrane transport establishment of localization in cell intracellular protein transmembrane transport intracellular transport transmembrane transport protein transport SRP-dependent cotranslational protein targeting to membrane, translocation intracellular protein transport	membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membrane-bounded organelle intracellular organelle lumen nuclear speck nuclear body intracellular organelle cellular anatomical structure nucleoplasm organelle lumen organelle nuclear lumen membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membrane-bounded organelle intracellular organelle lumen nuclear speck nuclear body intracellular organelle cellular anatomical structure nucleoplasm organelle lumen organelle nuclear lumen cytoplasm cytosol signal recognition particle protein-containing complex signal recognition particle, endoplasmic reticulum targeting ribonucleoprotein complex endoplasmic reticulum endomembrane system
B, D	Signal recognition particle receptor subunit alpha	ribonucleoprotein complex binding protein-containing complex binding binding signal recognition particle 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 RNA binding organic cyclic compound binding ribonucleoprotein complex binding protein-containing complex binding binding signal recognition particle 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 RNA binding organic cyclic compound binding nucleic acid 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 GTPase activity	protein localization cellular localization establishment of protein localization nitrogen compound transport transport intracellular transport establishment of localization localization protein transport establishment of localization in cell cellular macromolecule localization macromolecule localization cellular process intracellular protein transport protein localization cellular localization establishment of protein localization nitrogen compound transport transport intracellular transport establishment of localization localization protein transport establishment of localization in cell cellular macromolecule localization macromolecule localization cellular process intracellular protein transport establishment of protein localization to membrane protein targeting localization within membrane protein localization to membrane protein targeting to membrane cotranslational protein targeting to membrane establishment of protein localization to organelle protein localization to organelle establishment of protein localization to endoplasmic reticulum protein localization to endoplasmic reticulum protein targeting to ER cellular component organization cellular component biogenesis cellular component assembly SRP-dependent cotranslational protein targeting to membrane protein-containing complex assembly cellular component organization or biogenesis SRP-dependent cotranslational protein targeting to membrane, signal sequence recognition protein-containing complex organization	cellular anatomical structure membrane membrane-bounded organelle protein-containing complex intracellular anatomical structure organelle subcompartment membrane protein complex intracellular membrane-bounded organelle endomembrane system rough endoplasmic reticulum endoplasmic reticulum subcompartment intracellular organelle bounding membrane of organelle rough endoplasmic reticulum membrane cellular anatomical structure membrane membrane-bounded organelle protein-containing complex intracellular anatomical structure organelle subcompartment membrane protein complex intracellular membrane-bounded organelle endomembrane system rough endoplasmic reticulum endoplasmic reticulum subcompartment intracellular organelle 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 extracellular exosome extracellular vesicle extracellular organelle extracellular region extracellular space vesicle extracellular membrane-bounded organelle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, C	IPR000897	Signal recognition particle, SRP54 subunit, GTPase domain	Domain
A, C	IPR004125	Signal recognition particle, SRP54 subunit, M-domain	Domain
A, C	IPR003593	AAA+ ATPase domain	Domain
A, C	IPR013822	Signal recognition particle SRP54, helical bundle	Domain
A, C	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
A, C	IPR022941	Signal recognition particle, SRP54 subunit	Family
A, C	IPR036225	SRP/SRP receptor, N-terminal	Homologous Superfamily
A, C	IPR042101	Signal recognition particle SRP54, N-terminal domain superfamily	Homologous Superfamily
A, C	IPR006325	Signal recognition particle, SRP54 subunit, eukaryotic	Family
A, C	IPR036891	Signal recognition particle, SRP54 subunit, M-domain superfamily	Homologous Superfamily
B, D	IPR000897	Signal recognition particle, SRP54 subunit, GTPase domain	Domain
B, D	IPR036225	SRP/SRP receptor, N-terminal	Homologous Superfamily
B, D	IPR011012	Longin-like domain superfamily	Homologous Superfamily
B, D	IPR042101	Signal recognition particle SRP54, N-terminal domain superfamily	Homologous Superfamily
B, D	IPR003593	AAA+ ATPase domain	Domain
B, D	IPR007222	Signal recognition particle receptor, alpha subunit, N-terminal	Domain
B, D	IPR013822	Signal recognition particle SRP54, helical bundle	Domain
B, D	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, C	Pharos: P61011	Shwachman-Diamond syndrome Alzheimer disease lymphoplasmacytic lymphoma pancreatic ductal adenocarcinoma plasma cell myeloma Shwachman syndrome atopic eczema osteosarcoma Pick disease primary biliary cholangitis dermatomyositis ovarian cancer pituitary cancer progressive supranuclear palsy
B, D	Pharos: P08240	astrocytic tumor osteosarcoma pancreatic intraductal papillary-mucinous neoplasm Gaucher disease ovarian cancer malignant pancreatic neoplasm pancreatic ductal adenocarcinoma

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.