The function of ENSG00000184047 (DIABLO, diablo IAP-binding mitochondrial protein) is as follows. Promotes apoptosis by activating caspases in the cytochrome c/Apaf-1/caspase-9 pathway. Acts by opposing the inhibitory activity of inhibitor of apoptosis proteins (IAP). Inhibits the activity of BIRC6/BRUCE by inhibiting its binding to caspases (PubMed:15200957, PubMed:36758104, PubMed:36758105, PubMed:36758106). {ECO:0000269|PubMed:10929711, ECO:0000269|PubMed:15200957, ECO:0000269|PubMed:36758104, ECO:0000269|PubMed:36758105, ECO:0000269|PubMed:36758106}. [Isoform 3]: Attenuates the stability and apoptosis- inhibiting activity of XIAP/BIRC4 by promoting XIAP/BIRC4 ubiquitination and degradation through the ubiquitin-proteasome pathway. Also disrupts XIAP/BIRC4 interacting with processed caspase-9 and promotes caspase-3 activation. . [Isoform 1]: Defective in the capacity to down-regulate the XIAP/BIRC4 abundance. .