FUNCTION: SwissProt: Q16611 # In the presence of an appropriate stimulus, accelerates programmed cell death by binding to, and antagonizing the a repressor Bcl-2 or its adenovirus homolog E1B 19k protein.
SIZE: 211 amino acids; 23409 Da
SUBUNIT: Forms heterodimers with Bcl-2, E1B 19k protein, and Bcl- X(L).
SUBCELLULAR LOCATION: Membrane; Single-pass membrane protein (Potential).
TISSUE SPECIFICITY: Expressed in a wide variety of tissues, with highest levels in the heart and skeletal muscle.
DOMAIN:SwissProt: Q16611 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.
SIMILARITY: Belongs to the Bcl-2 family.