VAMP7B — Arabidopsis thaliana

Summary

AT1G04750, also known as VAMP7B or VAMP721, encodes a vesicle-associated membrane protein belonging to the V-SNARE family, containing a Longin domain and acting as a protein membrane adaptor with SNARE binding and PtdIns(4,5)P2 binding activities. In Arabidopsis thaliana, VAMP721 is associated with vesicle fusion, secretion, cell plate formation, vacuolar transport, and protein localization to the plasma membrane. It is linked to resistance against Ralstonia solanacearum, defense response via callose deposition, and downregulation of cellular defense responses. The gene is associated with numerous traits including plant cell size, turgor pressure, starch mobilization, cadmium concentration, leaf chlorosis, root hair length, lateral root length, stomatal closure time, anthocyanin and chlorophyll content, abscisic acid sensitivity, flowering time, and disease tolerance. It localizes to early endosome membranes, exocyst, SNARE complex, pollen tube tip, cell plate, and vesicles.