7VS3 | pdb_00007vs3

The crystal structure of rat calcium-dependent activator protein for secretion (CAPS) C2PH

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PH	e7vs3A1	A: beta barrels	X: PH domain-like	H: PH domain-like (From Topology)	T: PH domain-like	F: PH	ECOD (1.6)
A	C2_1	e7vs3A2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: C2 domain (From Topology)	T: C2 domain	F: C2_1	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.30.29.30	Mainly Beta	Roll	PH-domain like	Pleckstrin-homology domain (PH domain)/Phosphotyrosine-binding domain (PTB)	CATH (utative)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF25341	C2 domain of CAPS protein (C2_CAPS)	C2 domain of CAPS protein	This entry represents the C2 domain found in calcium-dependent secretion activator (CAPS) proteins, which are essential regulators of dense-core vesicle exocytosis. The domain has a typical C2 superfamily fold consisting of an eight-stranded beta-san ...	This entry represents the C2 domain found in calcium-dependent secretion activator (CAPS) proteins, which are essential regulators of dense-core vesicle exocytosis. The domain has a typical C2 superfamily fold consisting of an eight-stranded beta-sandwich but lacks calcium-binding capacity. Instead, it works together with the adjacent PH domain through a conserved hydrophobic interface to bind PI(4,5)P2. A polybasic patch (K457, K459, R477) in the C2 domain cooperates with the PH domain's PI(4,5)P2 binding site to enhance membrane binding. The tight association between the C2 and PH domains is essential for CAPS function in neurotransmitter release.	Domain
A	PF00169	PH domain (PH)	PH domain	PH stands for pleckstrin homology.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Calcium-dependent secretion activator 1	cation binding ion binding binding calcium ion binding metal ion binding small molecule binding phosphatidylinositol-4,5-bisphosphate binding anion binding phosphatidylinositol bisphosphate binding phospholipid binding lipid binding phosphatidylinositol phosphate binding phosphatidylinositol binding protein binding cation binding ion binding binding calcium ion binding metal ion binding small molecule binding phosphatidylinositol-4,5-bisphosphate binding anion binding phosphatidylinositol bisphosphate binding phospholipid binding lipid binding phosphatidylinositol phosphate binding phosphatidylinositol binding protein binding kinase binding enzyme binding protein kinase binding	regulated exocytosis transport secretion export from cell establishment of localization vesicle-mediated transport localization secretion by cell exocytosis cellular process calcium-ion regulated exocytosis regulation of localization regulation of cellular process positive regulation of biological process regulated exocytosis transport secretion export from cell establishment of localization vesicle-mediated transport localization secretion by cell exocytosis cellular process calcium-ion regulated exocytosis regulation of localization regulation of cellular process positive regulation of biological process positive regulation of secretion by cell positive regulation of exocytosis regulation of secretion by cell positive regulation of secretion positive regulation of cellular process regulation of biological process regulation of transport biological regulation regulation of vesicle-mediated transport regulation of secretion positive regulation of transport regulation of exocytosis establishment of protein localization protein transport macromolecule localization intracellular protein localization cellular localization establishment of localization in cell establishment of organelle localization regulation of calcium ion-dependent exocytosis positive regulation of dense core granule exocytosis regulation of regulated secretory pathway dense core granule localization positive regulation of regulated secretory pathway organelle localization secretory granule localization vesicle localization positive regulation of calcium ion-dependent exocytosis establishment of vesicle localization dense core granule exocytosis regulation of dense core granule exocytosis vesicle organization cellular component organization organelle organization cellular component organization or biogenesis signaling synaptic vesicle cycle synaptic vesicle exocytosis cell communication vesicle-mediated transport in synapse synaptic signaling signal release presynaptic dense core vesicle exocytosis calcium ion-regulated exocytosis of neurotransmitter trans-synaptic signaling neurotransmitter secretion neuronal dense core vesicle exocytosis cell-cell signaling neurotransmitter transport chemical synaptic transmission signal release from synapse anterograde trans-synaptic signaling synaptic vesicle priming cellular component biogenesis cellular component assembly protein-containing complex assembly protein-containing complex organization exocytic process monoamine transport nitrogen compound transport organic hydroxy compound transport catecholamine secretion catecholamine transport	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol membrane-bounded organelle dense core granule intracellular vesicle intracellular membrane-bounded organelle endomembrane system intracellular organelle cytoplasmic vesicle organelle secretory granule secretory vesicle cellular anatomical structure intracellular anatomical structure cytoplasm cytosol membrane-bounded organelle dense core granule intracellular vesicle intracellular membrane-bounded organelle endomembrane system intracellular organelle cytoplasmic vesicle organelle secretory granule secretory vesicle vesicle presynapse synapse cell junction glutamatergic synapse extrinsic component of organelle membrane extrinsic component of neuronal dense core vesicle membrane bounding membrane of organelle vesicle membrane neuronal dense core vesicle extrinsic component of dense core granule membrane neuronal dense core vesicle membrane membrane cytoplasmic vesicle membrane dense core granule membrane extrinsic component of membrane organelle membrane secretory granule membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR001849	Pleckstrin homology domain	Domain
A	IPR014770	Munc13 homology 1	Domain
A	IPR000008	C2 domain	Domain
A	IPR011993	PH-like domain superfamily	Homologous Superfamily
A	IPR033227	Calcium-dependent secretion activator	Family
A	IPR057457	CAPS, C2 domain	Domain
A	IPR010439	MUN domain	Domain

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.