Suppresses apoptosis in a variety of cell systems including factor-dependent lymphohematopoietic and neural cells. Regulates cell death by controlling the mitochondrial membrane permeability. Appears to function in a feedback loop system with caspases. Inhibits caspase activity either by preventing the release of cytochrome c from the mitochondria and/or by binding to the apoptosis-activating factor (APAF-1).
Specificity
Natural and recombinant Rat Apoptosis regulator Bcl-2
Subcellular Location
Mitochondrion outer membrane Single-pass membrane protein Nucleus membrane Single-pass membrane protein Endoplasmic reticulum membrane Single-pass membrane protein
Forms homodimers, and heterodimers with BAX, BAD, BAK and Bcl-X(L). Heterodimerization with BAX requires intact BH1 and BH2 motifs, and is necessary for anti-apoptotic activity. Also interacts with APAF1, BBC3, BCL2L1, BNIPL, EI24, FKBP8, MRPL41, RAF-1, TP53BP2. Interacts with BAG1 in an ATP-dependent manner.