BAX Q07812

凋亡调节因子BAX (Bcl-2样蛋白4) (Bcl2-L-4)

功能描述

在线粒体凋亡过程中发挥作用 (PubMed:10772918, PubMed:11060313, PubMed:16113678, PubMed:16199525, PubMed:18948948, PubMed:21199865, PubMed:21458670, PubMed:25609812, PubMed:36361894, PubMed:8358790, PubMed:8521816)。在正常条件下，BAX主要通过由BCL2L1/Bcl-xL介导的从线粒体到细胞质的持续逆向转运而定位于细胞质，从而避免有毒BAX水平在线粒体外膜（MOM）的积累 (PubMed:21458670)。在应激条件下，发生构象改变导致其易位至线粒体膜，进而引起细胞色素c的释放，从而引发凋亡 (PubMed:10772918, PubMed:11060313, PubMed:16113678, PubMed:16199525, PubMed:18948948, PubMed:21199865, PubMed:21458670, PubMed:25609812, PubMed:8358790, PubMed:8521816)。促进CASP3的激活，从而引起凋亡 (PubMed:10772918, PubMed:11060313, PubMed:16113678, PubMed:16199525, PubMed:18948948, PubMed:21199865, PubMed:21458670, PubMed:25609812, PubMed:8358790, PubMed:8521816)。 {ECO:0000269|PubMed:10772918, ECO:0000269|PubMed:11060313, ECO:0000269|PubMed:16113678, ECO:0000269|PubMed:16199525, ECO:0000269|PubMed:18948948, ECO:0000269|PubMed:21199865, ECO:0000269|PubMed:21458670, ECO:0000269|PubMed:25609812, ECO:0000269|PubMed:36361894, ECO:0000269|PubMed:8358790, ECO:0000269|PubMed:8521816}。

组织特异性

Expressed in a wide variety of tissues. Isoform Psi is found in glial tumors. Isoform Alpha is expressed in spleen, breast, ovary, testis, colon and brain, and at low levels in skin and lung. Isoform Sigma is expressed in spleen, breast, ovary, testis, lung, colon, brain and at low levels in skin. Isoform Alpha and isoform Sigma are expressed in pro-myelocytic leukemia, histiocytic lymphoma, Burkitt's lymphoma, T-cell lymphoma, lymphoblastic leukemia, breast adenocarcinoma, ovary adenocarcinoma, prostate carcinoma, prostate adenocarcinoma, lung carcinoma, epidermoid carcinoma, small cell lung carcinoma and colon adenocarcinoma cell lines.

亚细胞定位

[Isoform Alpha]: Mitochondrion outer membrane