1S94 | pdb_00001s94

Crystal structure of the Habc domain of neuronal syntaxin from the squid Loligo pealei

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1s94a_	All alpha proteins	STAT-like	t-snare proteins	t-snare proteins	Syntaxin 1A N-terminal domain	(Doryteuthis pealeii ) [TaxId: 1051067 ],	SCOPe (2.08)
B	d1s94b_	All alpha proteins	STAT-like	t-snare proteins	t-snare proteins	Syntaxin 1A N-terminal domain	(Doryteuthis pealeii ) [TaxId: 1051067 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	t-snare proteins	8029113	4000986	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	t-snare proteins	8041492	3000366	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	t-snare proteins	8041492	3000366	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	Syntaxin	e1s94A1	A: alpha bundles	X: STAT-like	H: t-snare proteins (From Topology)	T: t-snare proteins	F: Syntaxin	ECOD (1.6)
B	Syntaxin	e1s94B1	A: alpha bundles	X: STAT-like	H: t-snare proteins (From Topology)	T: t-snare proteins	F: Syntaxin	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.20.58.70	Mainly Alpha	Up-down Bundle	Methane Monooxygenase Hydroxylase	Chain G, domain 1	CATH (4.3.0)
B	1.20.58.70	Mainly Alpha	Up-down Bundle	Methane Monooxygenase Hydroxylase	Chain G, domain 1	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF00804	Syntaxin (Syntaxin)	Syntaxin	Syntaxins are the prototype family of SNARE proteins. They usually consist of three main regions - a C-terminal transmembrane region, a central SNARE domain which is characteristic of and conserved in all syntaxins (Pfam:PF05739), and an N-terminal d ...	Syntaxins are the prototype family of SNARE proteins. They usually consist of three main regions - a C-terminal transmembrane region, a central SNARE domain which is characteristic of and conserved in all syntaxins (Pfam:PF05739), and an N-terminal domain that is featured in this entry. This domain varies between syntaxin isoforms; in syntaxin 1A (Swiss:O35526) it is found as three alpha-helices with a left-handed twist. It may fold back on the SNARE domain to allow the molecule to adopt a 'closed' configuration that prevents formation of the core fusion complex - it thus has an auto-inhibitory role. The function of syntaxins is determined by their localisation. They are involved in neuronal exocytosis, ER-Golgi transport and Golgi-endosome transport, for example. They also interact with other proteins as well as those involved in SNARE complexes. These include vesicle coat proteins, Rab GTPases, and tethering factors [6].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	s-syntaxin	protein binding binding SNARE binding SNAP receptor activity protein-macromolecule adaptor activity molecular adaptor activity	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 membrane organization membrane fusion organelle membrane fusion vesicle-mediated transport vesicle organization cellular component organization organelle fusion organelle organization cellular component organization or biogenesis vesicle fusion secretion by cell exocytosis secretion export from cell organelle localization by membrane tethering organelle localization vesicle docking membrane docking	cellular anatomical structure endomembrane system SNARE complex protein-containing complex intracellular anatomical structure membrane membrane protein complex cytoplasm cell periphery plasma membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR006012	Syntaxin/epimorphin, conserved site	Conserved Site
A, B	IPR000727	Target SNARE coiled-coil homology domain	Domain
A, B	IPR010989	SNARE	Homologous Superfamily
A, B	IPR006011	Syntaxin, N-terminal domain	Domain
A, B	IPR045242	Syntaxin	Family

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.