Annotations: 4P3G

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
C	SCOP2B Superfamily	TPR-like	8053749	3001345	SCOP2B (2022-06-29)
A	SCOP2 Family	RNA-binding signal recognition particle 68-like	8046405	4005065	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	TPR-like	8053749	3001345	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	TPR-like	8053749	3001345	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	TPR-like	8053749	3001345	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	PF16969	e4p3gC1	A: alpha superhelices	X: Repetitive alpha hairpins	H: ARM repeat (From Topology)	T: ARM repeat	F: PF16969	ECOD (1.6)
A	PF16969	e4p3gA1	A: alpha superhelices	X: Repetitive alpha hairpins	H: ARM repeat (From Topology)	T: ARM repeat	F: PF16969	ECOD (1.6)
B	PF16969	e4p3gB1	A: alpha superhelices	X: Repetitive alpha hairpins	H: ARM repeat (From Topology)	T: ARM repeat	F: PF16969	ECOD (1.6)
D	PF16969	e4p3gD1	A: alpha superhelices	X: Repetitive alpha hairpins	H: ARM repeat (From Topology)	T: ARM repeat	F: PF16969	ECOD (1.6)

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)
A	1.10.3450.40	Mainly Alpha	Orthogonal Bundle	Hyaluronidase domain-like	Signal recognition particle, SRP68 subunit, RNA-binding domain	CATH (4.3.0)
B	1.10.3450.40	Mainly Alpha	Orthogonal Bundle	Hyaluronidase domain-like	Signal recognition particle, SRP68 subunit, RNA-binding domain	CATH (4.3.0)
D	1.10.3450.40	Mainly Alpha	Orthogonal Bundle	Hyaluronidase domain-like	Signal recognition particle, SRP68 subunit, RNA-binding domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D	PF16969	RNA-binding signal recognition particle 68 (SRP68)	RNA-binding signal recognition particle 68	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	Signal recognition particle subunit SRP68	endoplasmic reticulum signal peptide binding signal sequence binding binding peptide binding ribonucleoprotein complex binding protein-containing complex binding signal recognition particle binding RNA binding 7S RNA binding organic cyclic compound binding nucleic acid binding	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	membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membrane-bounded organelle cellular anatomical entity nucleolus intracellular organelle lumen intracellular organelle organelle lumen organelle intracellular non-membrane-bounded organelle nuclear lumen non-membrane-bounded organelle membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membrane-bounded organelle cellular anatomical entity nucleolus intracellular organelle lumen intracellular organelle organelle lumen organelle intracellular non-membrane-bounded organelle nuclear lumen non-membrane-bounded organelle signal recognition particle protein-containing complex signal recognition particle, endoplasmic reticulum targeting ribonucleoprotein complex cytoplasm

InterPro: Protein Family Classification InterPro Database Homepage

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

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.