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STX1A

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For Research Use Only. Not For Clinical Use.


This gene encodes a member of the syntaxin superfamily. Syntaxins are nervous system-specific proteins implicated in the docking of synaptic vesicles with the presynaptic plasma membrane. Syntaxins possess a single C-terminal transmembrane domain, a SNARE [Soluble NSF (N-ethylmaleimide-sensitive fusion protein)-Attachment protein REceptor] domain (known as H3), and an N-terminal regulatory domain (Habc). Syntaxins bind synaptotagmin in a calcium-dependent fashion and interact with voltage dependent calcium and potassium channels via the C-terminal H3 domain. This gene product is a key molecule in ion channel regulation and synaptic exocytosis.
Protein class

Human disease related genes, Plasma proteins, Transporters

Predicted location

Intracellular, Membrane (different isoforms)

Single cell type specificity

Cell type enhanced (Excitatory neurons, Enteroendocrine cells, Pancreatic endocrine cells)

Immune cell specificity

Not detected in immune cells

Cell line specificity

Cell line enhanced (SCLC-21H, U-87 MG)

Interaction

Part of the SNARE core complex containing SNAP25, VAMP2 and STX1A; this complex constitutes the basic catalytic machinery of the complex neurotransmitter release apparatus (PubMed:26635000). The SNARE complex interacts with CPLX1 (By similarity). Interacts with STXBP1 (PubMed:12730201, 26635000). Interacts (via C-terminus) with KCNB1 (via C-terminus); the interaction increases in a calcium-dependent manner and induces a pore-independent enhancement of exocytosis in neuroendocrine cells, chromaffin cells, pancreatic beta cells and from the soma of dorsal root ganglia (DRG) neurons (By similarity). Interacts with SYTL4 (By similarity). Interacts with STXBP6 (By similarity). Interacts with PLCL1 (via C2 domain) (By similarity). Interacts with OTOF (By similarity). Interacts with LGI3 (By similarity). Interacts with SLC6A4 (By similarity). Interacts with SYT6 and SYT8; the interaction is Ca(2+)-dependent (By similarity). Interacts with VAMP8 (PubMed:12130530). Interacts with SNAP23 (PubMed:12130530). Interacts with VAPA and SYBU (PubMed:15459722). Interacts with PRRT2 (By similarity). Interacts with SEPT8 (By similarity). Interacts with STXBP5L (By similarity). Interacts with synaptotagmin-1/SYT1 (By similarity). Interacts with SEPTIN5; in the cerebellar cortex (By similarity). Interacts with SEPTIN4; in the striatum (By similarity).

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