Annotations: 4CCA

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Sec1/munc18-like (SM) proteins	8066430	4002933	SCOP2 (2021-05-27)
A	SCOP2 Superfamily	Sec1/munc18-like	8066431	3001920	SCOP2 (2021-05-27)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF00995	e4ccaA3	A: alpha complex topology	X: alpha-helical domain in sec1/munc18-like (SM) proteins (From Topology)	H: alpha-helical domain in sec1/munc18-like (SM) proteins (From Topology)	T: alpha-helical domain in sec1/munc18-like (SM) proteins	F: PF00995	ECOD (1.6)
A	PF00995	e4ccaA1	A: a/b three-layered sandwiches	X: Rossmann-like domains in Sec1/munc18-like proteins (From Topology)	H: Rossmann-like domains in Sec1/munc18-like proteins (From Topology)	T: Rossmann-like domains in Sec1/munc18-like proteins	F: PF00995	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.50.2060	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Sec1/Munc18 (SM) protein, domain 1	CATH (4.3.0)
A	3.40.50.1910	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Sec1/Munc18 (SM) protein, domain 2	CATH (4.3.0)
A	3.90.830.10	Alpha Beta	Alpha-Beta Complex	Syntaxin Binding Protein 1	Chain A, domain 2	CATH (4.3.0)
A	1.25.40.60	Mainly Alpha	Alpha Horseshoe	Serine Threonine Protein Phosphatase 5, Tetratricopeptide repeat		CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00995	Sec1 family (Sec1)	Sec1 family	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	SYNTAXIN-BINDING PROTEIN 2	syntaxin-1 binding protein binding binding SNARE binding syntaxin binding syntaxin-3 binding	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 immune system process leukocyte mediated immunity leukocyte mediated cytotoxicity cell killing immune effector process trans-synaptic signaling regulation of biological process neurotransmitter secretion signaling secretion biological regulation cell-cell signaling export from cell neurotransmitter transport cell communication chemical synaptic transmission signal release from synapse synaptic signaling secretion by cell signal release anterograde trans-synaptic signaling vesicle-mediated transport membrane docking organelle localization by membrane tethering exocytosis organelle localization vesicle docking exocytic process vesicle docking involved in exocytosis neutrophil activation multicellular organismal process regulated exocytosis response to stimulus cell activation involved in immune response leukocyte degranulation myeloid leukocyte mediated immunity myeloid leukocyte activation leukocyte activation neutrophil mediated immunity neutrophil activation involved in immune response leukocyte activation involved in immune response neutrophil degranulation immune response cell activation myeloid cell activation involved in immune response granulocyte activation establishment of organelle localization regulation of immune effector process regulation of localization regulation of myeloid leukocyte mediated immunity regulation of cellular process regulation of immune system process vacuolar localization mast cell degranulation regulation of secretion regulation of leukocyte mediated immunity lysosome localization regulation of mast cell degranulation regulation of regulated secretory pathway regulation of secretion by cell mast cell activation regulation of leukocyte degranulation mast cell mediated immunity regulation of transport regulation of vesicle-mediated transport mast cell activation involved in immune response regulation of exocytosis	extracellular region cellular anatomical entity membrane-bounded organelle intracellular anatomical structure lytic vacuole cytolytic granule vacuole intracellular membrane-bounded organelle intracellular organelle organelle cytoplasm lysosome extracellular exosome extracellular vesicle extracellular region cellular anatomical entity membrane-bounded organelle intracellular anatomical structure lytic vacuole cytolytic granule vacuole intracellular membrane-bounded organelle intracellular organelle organelle cytoplasm lysosome extracellular exosome extracellular vesicle extracellular organelle extracellular space vesicle extracellular membrane-bounded organelle cytosol intracellular vesicle azurophil granule endomembrane system cytoplasmic vesicle secretory granule primary lysosome secretory vesicle cell periphery plasma membrane membrane specific granule tertiary granule presynapse synapse cell junction

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR043154	Sec1-like, domain 1	Homologous Superfamily
A	IPR036045	Sec1-like superfamily	Homologous Superfamily
A	IPR027482	Sec1-like, domain 2	Homologous Superfamily
A	IPR043127	Sec1-like, domain 3a	Homologous Superfamily
A	IPR001619	Sec1-like protein	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	Pharos: Q15833	familial hemophagocytic lymphohistiocytosis 5 hemophagocytic syndrome Chediak-Higashi syndrome familial hemophagocytic lymphohistiocytosis type 1 leukodystrophy rheumatoid arthritis chronic obstructive pulmonary disease Griscelli syndrome osteosarcoma psoriasis

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 R01GM133198.