Vesicle-associated membrane protein-associated protein B/C (VAPB) belongs to the VAP family. It contains three structural domains: the major sperm protein (MSP) domain, an amphipathic helical structure and a carboxy-terminal domain that acts as a membrane anchor. VAPB is localized in intracellular membranes of the endoplasmic reticulum and Golgi apparatus. The gene encoding this protein is located on chromosome 20q13.3.
Synonyms: Anti-VAMP-B/VAMP-C; Anti-VAMP-associated protein B/C; Anti-VAP-B/VAP-C; Anti-Vesicle-associated membrane protein-associated protein B/C
Storage: -20C
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Biochem Physiol Actions: Vesicle-associated membrane protein-associated protein B/C (VAPB) plays a role during endoplasmic reticulum (ER)-Golgi transport and secretion. It has been shown to act in the unfolded protein response which is activated whenever misfolded proteins accumulate in the ER. Mutations in the gene encoding VAPB are associated with amyotrophic lateral sclerosis and late-onset spinal muscular atrophy.
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