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This gene encodes a member of a family of proteins containing a Bcl-2 homology domain 2 (BH2). The encoded protein is an anti-apoptotic factor that acts as an inhibitor of caspases 3 and 7 in the cytoplasm. In the nucleus, it binds to the p53 tumor suppressor protein, preventing its association with target genes. Overexpression of this gene has been detected in a number of different cancers. There is a pseudogene for this gene on chromosome 3. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Sep 2013]
Predicted intracellular proteins Protein evidence (Ezkurdia et al 2014)
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GO:0002039 [p53 binding] GO:0005515 [protein binding] GO:0005634 [nucleus] GO:0016020 [membrane] GO:0045944 [positive regulation of transcription from RNA polymerase II promoter] GO:1902166 [negative regulation of intrinsic apoptotic signaling pathway in response to DNA damage by p53 class mediator] GO:1990001 [inhibition of cysteine-type endopeptidase activity involved in apoptotic process] GO:2000773 [negative regulation of cellular senescence]