BCL2 associated X protein transcript variant delta2
membrane isoform alpha
Accelerates programmed cell death by binding to, and antagonizing the apoptosis repressor BCL2 or its adenovirus homolog E1B 19k protein. Under stress conditions, undergoes a conformation change that causes translocation to the mitochondrion membrane, leading to the release of cytochrome c that then triggers apoptosis. Promotes activation of CASP3, and thereby apoptosis.
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.
Belongs to the Bcl-2 family.
Intact BH3 motif is required by BIK, BID, BAK, BAD and BAX for their pro-apoptotic activity and for their interaction with anti-apoptotic members of the Bcl-2 family.
Cytoplasm and Mitochondrion membrane. Cytoplasm. Colocalizes with 14-3-3 proteins in the cytoplasm. Under stress conditions, undergoes a conformation change that causes release from JNK-phosphorylated 14-3-3 proteins and translocation to the mitochondrion membrane.
Western blot - Human Bax full length protein (ab85157)
Lane 1 = Bax protein (Tagged) (ab85157) – 10 ng. Lane 2 = Extract of HeLa cells – 40 ug. Lane 3 = Extract of HepG2 cells – 40 ug. Lane 4 = Bax protein (Tagged) (ab85157) – 10 ng. Lane 5 = Extract of HeLa cells – 40 ug. Lane 6 = Extract of HepG2 cells – 40 ug. SDS PAGE performed under reducing conditions (100mM DTT – Sample heated at 50ºC). Primary : Lanes 1-3: Anti Bax antibody (ab77566) at 1 ug/mL. Lanes 4-6: Anti Bax antibody (ab32503) at 1:2000 dilution. Secondary : Lanes 1-3: Goat anti mouse IgG(H&L)-HRP at 1:10000. Lanes 4-6: Goat anti rabbit IgG(H&L)-HRP at 1:10000. Development: ECL with 2 min exposure. Blocking: in 5% Milk + PBS for 3 hours at RT. Primary antibody: in 5% Milk + PBS overnight at 4 C. Secondary antibody: in 5% Milk + PBS for 2 hour at RT. Predicted band size : Bax 21kDa and Bax (Tagged) 49 kDa. Observed band size : Bax 21kDa and Bax (Tagged) 49 kDa
Standard curve for Bax (Analyte: ab85157); dilution range 1pg/ml to 1µg/ml using Capture Antibody ab77566 at 0.2µg/ml and Detector Antibody ab32503 at 0.5µg/ml. Concentration of ab32503 may vary from lot to lot; please use this curve as guideline.
has not yet been referenced specifically in any publications.