Immunogen sequence: MNIFDRKINF DALLKFSHIT PSTQQHLKK
BI-1 (Bax Inhibitor 1) is in anti-apoptotic protein that has been linked to protection from apoptosis induced endoplasmic reticulum (ER) stress (reviewed in Bailley-Maitre et al, 2007). BI-1 contains several transmembrane domains, localizes to ER membranes, and has cytoprotective functions that are conserved in both animals and plants. BI-1 suppresses apoptosis induced by ectopic expression of the proapoptotic protein Bax as well as other types of stimuli. Cells from BI-1 knockout (KO) mice are hypersensitivite to apoptosis induced by ER stress-causing chemical agents (thapsigargin, tunicamycin, and brefeldin A) or by ischemia-reperfusion (IR) injury. Conversely, overexpression of BI-1 protects against apoptosis induced by ER stress and IR. The mechanism by which BI-1 protects cells from ER-stress induced apoptosis remains to be fully elucidated, itis thought to involve regulation of Ca2+ handling by the ER.
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Protein Aliases: Bax inhibitor 1; BAXI1; BI-1; TEGT; testis enhanced gene transcript; Testis-enhanced gene transcript protein; Transmembrane BAX inhibitor motif-containing protein 6
Gene Aliases: BAXI1; BI-1; BI1; TEGT; TMBIM6
UniProt ID: (Human) P55061
Entrez Gene ID: (Human) 7009