Annotations: 1E8S

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1e8sa_	Alpha and beta proteins (a+b)	Signal recognition particle alu RNA binding heterodimer, SRP9/14	Signal recognition particle alu RNA binding heterodimer, SRP9/14	Signal recognition particle alu RNA binding heterodimer, SRP9/14	Signal recognition particle 9KDa protein, SRP9	HUMAN (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B	d1e8sb_	Alpha and beta proteins (a+b)	Signal recognition particle alu RNA binding heterodimer, SRP9/14	Signal recognition particle alu RNA binding heterodimer, SRP9/14	Signal recognition particle alu RNA binding heterodimer, SRP9/14	Signal recognition particle 14KDa protein, SRP14	HUMAN (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Signal recognition particle alu RNA binding heterodimer, SRP9/14	8035086	3000976	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Signal recognition particle alu RNA binding heterodimer, SRP9/14	8035087	3000976	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)
A	SRP9-21	e1e8sA1	A: a+b two layers	X: SRP9/14-like	H: Signal recognition particle alu RNA binding heterodimer SRP9/14-related (From Topology)	T: Signal recognition particle alu RNA binding heterodimer SRP9/14-related	F: SRP9-21	ECOD (1.6)
B	SRP14	e1e8sB1	A: a+b two layers	X: SRP9/14-like	H: Signal recognition particle alu RNA binding heterodimer SRP9/14-related (From Topology)	T: Signal recognition particle alu RNA binding heterodimer SRP9/14-related	F: SRP14	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
B	PF02290	Signal recognition particle 14kD protein (SRP14)	Signal recognition particle 14kD protein	The signal recognition particle (SRP) is a multimeric protein involved in targeting secretory proteins to the rough endoplasmic reticulum membrane. SRP14 and SRP9 form a complex essential for SRP RNA binding.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	SIGNAL RECOGNITION PARTICLE 9 KDA PROTEIN	ribonucleoprotein complex binding protein-containing complex binding binding signal recognition particle binding RNA binding 7S RNA binding nucleic acid binding	regulation of cellular process negative regulation of biological process regulation of primary metabolic process post-transcriptional regulation of gene expression regulation of translational elongation negative regulation of translation negative regulation of cellular process protein metabolic process negative regulation of protein metabolic process negative regulation of macromolecule metabolic process regulation of biosynthetic process regulation of biological process regulation of protein metabolic process negative regulation of metabolic process regulation of cellular process negative regulation of biological process regulation of primary metabolic process post-transcriptional regulation of gene expression regulation of translational elongation negative regulation of translation negative regulation of cellular process protein metabolic process negative regulation of protein metabolic process negative regulation of macromolecule metabolic process regulation of biosynthetic process regulation of biological process regulation of protein metabolic process negative regulation of metabolic process biological regulation primary metabolic process regulation of macromolecule metabolic process gene expression translation macromolecule biosynthetic process negative regulation of translational elongation regulation of gene expression negative regulation of gene expression biosynthetic process negative regulation of biosynthetic process regulation of translation negative regulation of macromolecule biosynthetic process translational elongation regulation of macromolecule biosynthetic process metabolic process cellular process macromolecule metabolic process regulation of metabolic process 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 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 signal recognition particle, endoplasmic reticulum targeting ribonucleoprotein complex membrane-bounded organelle organelle subcompartment membrane membrane protein complex intracellular membrane-bounded organelle endomembrane system cellular anatomical structure intracellular anatomical structure cytoplasm cytosol signal recognition particle protein-containing complex signal recognition particle, endoplasmic reticulum targeting ribonucleoprotein complex membrane-bounded organelle organelle subcompartment membrane 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 organelle membrane endoplasmic reticulum protein-containing complex endoplasmic reticulum membrane
B	SIGNAL RECOGNITION PARTICLE 14 KDA PROTEIN	endoplasmic reticulum signal peptide binding signal sequence binding binding peptide binding RNA binding 7S RNA binding nucleic acid binding	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 extracellular region membrane-bounded organelle vesicle lumen intracellular anatomical structure intracellular vesicle membrane-enclosed lumen cytoplasmic vesicle lumen secretory granule lumen intracellular membrane-bounded organelle endomembrane system intracellular organelle lumen intracellular organelle cytoplasmic vesicle cellular anatomical structure extracellular region membrane-bounded organelle vesicle lumen intracellular anatomical structure intracellular vesicle membrane-enclosed lumen cytoplasmic vesicle lumen secretory granule lumen intracellular membrane-bounded organelle endomembrane system intracellular organelle lumen intracellular organelle cytoplasmic vesicle organelle lumen organelle secretory granule secretory vesicle cytoplasm vesicle cytosol signal recognition particle protein-containing complex signal recognition particle, endoplasmic reticulum targeting ribonucleoprotein complex ficolin-1-rich granule ficolin-1-rich granule lumen nucleus
C	7SL RNA, 88-MER	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR008832	Signal recognition particle SRP9	Family
A	IPR009018	Signal recognition particle, SRP9/SRP14 subunit	Homologous Superfamily
A	IPR039432	SRP9 domain	Domain
A	IPR039914	Signal recognition particle SRP9-like	Family
B	IPR003210	Signal recognition particle, SRP14 subunit	Family
B	IPR009018	Signal recognition particle, SRP9/SRP14 subunit	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	Pharos: P49458	breast carcinoma
B	Pharos: P37108	B-cell chronic lymphocytic leukemia ovarian cancer endometrial carcinoma pancreatic ductal adenocarcinoma Ewing sarcoma plasma cell myeloma

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.