1NRJ

Signal Recognition Particle Receptor Beta-Subunit in Complex with the SRX Domain from the Alpha-Subunit

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Membrane Protein Annotation: OPM

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1nrja_	Alpha and beta proteins (a+b)	Profilin-like	SNARE-like	SRP alpha N-terminal domain-like	Srx domain of the signal recognition particle receptor alpha-subunit	baker's yeast (Saccharomyces cerevisiae ) [TaxId: 4932 ],	SCOPe (2.08)
B	d1nrjb_	Alpha and beta proteins (a/b)	P-loop containing nucleoside triphosphate hydrolases	P-loop containing nucleoside triphosphate hydrolases	G proteins	Signal recognition particle receptor beta-subunit	baker's yeast (Saccharomyces cerevisiae ) [TaxId: 4932 ],	SCOPe (2.08)

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	8021189	4003710	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	SNARE-like	8033569	3001113	SCOP2 (2022-06-29)
B	SCOP2 Family	Ras-like monodomain GTPases	8021190	4004043	SCOP2 (2022-06-29)
B	SCOP2 Superfamily	Ras-like P-loop GTPases	8033570	3002022	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)
A	PF09201	e1nrjA1	A: a+b three layers	X: Profilin-like	H: profilin-like (From Topology)	T: profilin-like	F: PF09201	ECOD (1.6)
B	PF09439	e1nrjB1	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: PF09439	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.30.450.60	Alpha Beta	2-Layer Sandwich	Beta-Lactamase		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)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF09201	SRX, signal recognition particle receptor alpha subunit (SRX)	SRX, signal recognition particle receptor alpha subunit	Members of this family, which are predominantly found in eukaryotic signal recognition particle receptor alpha, consist of a central six-stranded anti-parallel beta-sheet sandwiched by helix alpha1 on one side and helices alpha2-alpha4 on the other. ...	Members of this family, which are predominantly found in eukaryotic signal recognition particle receptor alpha, consist of a central six-stranded anti-parallel beta-sheet sandwiched by helix alpha1 on one side and helices alpha2-alpha4 on the other. They interact with the small GTPase SR-beta, forming a complex that matches a class of small G protein-effector complexes, including Rap-Raf, Ras-PI3K(gamma), Ras-RalGDS, and Arl2-PDE(delta) [1]. Structurally the alpha subunit is SNARE-like.	Domain
B	PF09439	Signal recognition particle receptor beta subunit (SRPRB)	Signal recognition particle receptor beta subunit	The beta subunit of the signal recognition particle receptor (SRP) is a transmembrane GTPase which anchors the alpha subunit to the endoplasmic reticulum membrane [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Signal recognition particle receptor alpha subunit homolog	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 guanyl nucleotide binding GTP 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 guanyl nucleotide binding GTP binding nucleotide binding guanyl ribonucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding organic cyclic compound binding purine nucleotide binding anion binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding GTPase activity	protein localization establishment of protein localization cellular localization protein targeting establishment of localization localization establishment of protein localization to organelle cellular macromolecule localization macromolecule localization protein localization to organelle cellular process establishment of protein localization to endoplasmic reticulum protein localization to endoplasmic reticulum protein targeting to ER protein localization establishment of protein localization cellular localization protein targeting establishment of localization localization establishment of protein localization to organelle cellular macromolecule localization macromolecule localization protein localization to organelle cellular process 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 cotranslational protein targeting to membrane cellular component organization or biogenesis SRP-dependent cotranslational protein targeting to membrane, signal sequence recognition protein-containing complex organization establishment of protein localization to membrane localization within membrane protein localization to membrane protein targeting to membrane	membrane cellular anatomical entity 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 membrane cellular anatomical entity 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
B	Signal recognition particle receptor beta subunit	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 organic cyclic compound binding purine nucleotide 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 organic cyclic compound binding purine nucleotide binding anion binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding identical protein binding protein binding	protein localization establishment of protein localization cellular localization protein targeting establishment of localization localization establishment of protein localization to organelle cellular macromolecule localization macromolecule localization protein localization to organelle cellular process establishment of protein localization to endoplasmic reticulum protein localization to endoplasmic reticulum protein targeting to ER protein localization establishment of protein localization cellular localization protein targeting establishment of localization localization establishment of protein localization to organelle cellular macromolecule localization macromolecule localization protein localization to organelle cellular process 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 cotranslational protein targeting to membrane cellular component organization or biogenesis SRP-dependent cotranslational protein targeting to membrane, signal sequence recognition protein-containing complex organization establishment of protein localization to membrane localization within membrane protein localization to membrane protein targeting to membrane	membrane cellular anatomical entity 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 membrane cellular anatomical entity 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

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR015284	Signal recognition particle (SRP) receptor alpha subunit, N-terminal	Domain
A	IPR000897	Signal recognition particle, SRP54 subunit, GTPase domain	Domain
A	IPR036225	SRP/SRP receptor, N-terminal	Homologous Superfamily
A	IPR011012	Longin-like domain superfamily	Homologous Superfamily
A	IPR042101	Signal recognition particle SRP54, N-terminal domain superfamily	Homologous Superfamily
A	IPR003593	AAA+ ATPase domain	Domain
A	IPR013822	Signal recognition particle SRP54, helical bundle	Domain
A	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
B	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
B	IPR019009	Signal recognition particle receptor, beta subunit	Family

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A, B	OPM	Transmembrane	Bitopic proteins	SNARE-like superfamily	Srx domain of the signal recognition particle receptor alpha-subunit

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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 R01GM133198.