Annotations: 4P3E

Structure of the human SRP S domain

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
Pharos: Disease Associations

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
C	SCOP2B Superfamily	TPR-like	8053751	3001345	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	SRP19	8037027	3000831	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)
C	CBM_4_9	e4p3eC1	A: beta barrels	X: jelly-roll	H: Galactose-binding domain-like	T: Galactose-binding domain-like	F: CBM_4_9	ECOD (v294.2)
B	AAA_23	e4p3eB1	A: beta barrels	X: DEATH domain	H: HTH	T: winged helix domain	F: AAA_23	ECOD (v294.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
C	1.10.3450.40	Mainly Alpha	Orthogonal Bundle	Hyaluronidase domain-like	Signal recognition particle, SRP68 subunit, RNA-binding domain	CATH (4.3.0)
B	3.30.56.30	Alpha Beta	2-Layer Sandwich	Phenylalanyl-tRNA Synthetase	Chain B, domain 1	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
C	PF16969	RNA-binding signal recognition particle 68 (SRP68)	RNA-binding signal recognition particle 68	-	Family
B	PF01922	SRP19 protein (SRP19)	SRP19 protein	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C	Signal recognition particle subunit SRP68	endoplasmic reticulum signal peptide binding signal sequence binding binding peptide binding protein binding protein domain specific binding ribonucleoprotein complex binding protein-containing complex binding signal recognition particle binding RNA binding 7S RNA binding nucleic acid binding	response to stimulus response to chemical response to xenobiotic stimulus 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 response to stimulus response to chemical response to xenobiotic stimulus 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	cellular anatomical structure anchoring junction cell junction focal adhesion cell-substrate junction 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 anchoring junction cell junction focal adhesion cell-substrate junction membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membraneless organelle intracellular membrane-bounded organelle nucleolus intracellular organelle lumen intracellular organelle organelle lumen organelle membraneless organelle nuclear lumen cytoplasm cytosol signal recognition particle protein-containing complex ribonucleoprotein complex signal recognition particle, endoplasmic reticulum targeting ribosome endoplasmic reticulum endomembrane system
B	Signal recognition particle 19 kDa protein	RNA binding 7S RNA binding binding nucleic acid binding	localization establishment of protein localization cellular localization establishment of protein localization to membrane protein targeting cotranslational protein targeting to membrane cellular process localization within membrane establishment of localization protein targeting to membrane SRP-dependent cotranslational protein targeting to membrane, signal sequence recognition protein-containing complex organization cellular component organization cellular component biogenesis localization establishment of protein localization cellular localization establishment of protein localization to membrane protein targeting cotranslational protein targeting to membrane cellular process localization within membrane establishment of localization protein targeting to membrane SRP-dependent cotranslational protein targeting to membrane, signal sequence recognition protein-containing complex organization cellular component organization cellular component biogenesis cellular component assembly SRP-dependent cotranslational protein targeting to membrane establishment of protein localization to organelle protein-containing complex assembly cellular component organization or biogenesis establishment of protein localization to endoplasmic reticulum protein targeting to ER	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol signal recognition particle protein-containing complex ribonucleoprotein complex membrane-bounded organelle nucleus membrane-enclosed lumen intracellular membraneless organelle intracellular membrane-bounded organelle nucleolus intracellular organelle lumen cellular anatomical structure intracellular anatomical structure cytoplasm cytosol signal recognition particle protein-containing complex ribonucleoprotein complex membrane-bounded organelle nucleus membrane-enclosed lumen intracellular membraneless organelle intracellular membrane-bounded organelle nucleolus intracellular organelle lumen intracellular organelle organelle lumen organelle membraneless organelle nuclear lumen signal recognition particle, endoplasmic reticulum targeting nuclear body nucleoplasm
A	SRP RNA (124-mer)	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
C	IPR038253	SRP68, N-terminal domain superfamily	Homologous Superfamily
C	IPR034652	Signal recognition particle subunit SRP68, RNA-binding domain	Domain
C	IPR026258	Signal recognition particle subunit SRP68	Family
B	IPR002778	Signal recognition particle, SRP19 subunit	Family
B	IPR036521	Signal recognition particle, subunit SRP19-like superfamily	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
C	: Q9UHB9	Craniofacial Abnormalities ovarian cancer skin disease
B	: P09132	colorectal adenoma colorectal cancer

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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.