background:
Syntaxin 13 is an integral membrane protein that belongs to the t-SNARE family, a group of proteins involved in protein transport. Confocal immunofluoresence and electron microscopy studies have shown that syntaxin 13 is primarily localized to tubular early and recycling endosomes, where it colocalizes with transferrin receptor, and it is also localized in endosomal vacuoles. Syntaxin 13 has been found to be expressed in all tissues, with higher levels of the protein found in brain, lung, spleen, thymus and testes. Immunoprecipitation studies show that syntaxin 13 complexes with beta-SNAP, VAMP2/3, and SNAP25. The binding of this complex to alpha-SNAP and NSF is terminated in the presence of ATP. These results suggest that syntaxin 13 is a SNARE protein which mediates the recycling protein flow through tubulo vesicular recycling endosomes.
Function:
SNARE that acts to regulate protein transport between endosomes and the trans-Golgi network (By similarity). The SNARE complex containing STX6, STX12, VAMP4 and VTI1A mediates vesicle fusion (in vitro).
Subunit:
Associates with the BLOSLC1 complex. Interacts with BLOC1S6 (By similarity). Interacts with NAPA and SNAP23. Identified in a complex containing STX6, STX12, VAMP4 and VTI1A.
Subcellular Location:
Endosome membrane; Single-pass type IV membrane protein. Golgi apparatus membrane; Single-pass type IV membrane protein. Endomembrane system; Single-pass type IV membrane protein; Cytoplasmic side (Potential).
Tissue Specificity:
Ubiquitous. Highly expressed in brain.
Similarity:
Belongs to the syntaxin family.
Contains 1 t-SNARE coiled-coil homology domain.
Database links:
UniProtKB/Swiss-Prot: G3V7P1.1
Important Note:
This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications.
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