Domain:The BH1 and BH2 motifs form a hydrophobic groove which acts as a docking site for the BH3 domain of some pro-apoptotic proteins. The C-terminal residues of BCL2L2 fold into the BH3-binding cleft and modulate pro-survival activity by regulating ligand access. When BH3 domain-containing proteins bind , they displace the C-terminus , allowing its insertion into the membrane and neutralizing the pro-survival activity of BCL2L2. ,Domain:The BH4 motif seems to be involved in the anti-apoptotic function. ,Function:Promotes cell survival. Blocks dexamethasone-induced apoptosis. Mediates survival of postmitotic Sertoli cells by suppressing death-promoting activity of BAX. ,similarity:Belongs to the Bcl-2 family. ,subcellular location:Loosely associated with the mitochondrial membrane in healthy cells. During apoptosis , tightly bound to the membrane. ,tissue specificity:Expressed (at protein level) in a wide range of tissues with highest levels in brain , spinal cord , testis , pancreas , heart , spleen and mammary glands. Moderate levels found in thymus , ovary and small intestine. Not detected in salivary gland , muscle or liver. Also expressed in cell lines of myeloid , fibroblast and epithelial origin. Not detected in most lymphoid cell lines. ,
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