Javascript is not enabled on this browser. This site will not work properly without Javascript.
PhosphoSitePlus Homepage Cell Signaling Technology
HomeAbout PhosphoSiteUsing PhosphoSiteprivacy & cookiesCuration ProcessContact
logos LINCs Logo Mt Sinai Logo NIH Logo NCI Logo
Protein Page:
DIABLO (human)

DIABLO 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. Isoform 3 attenuates the stability and apoptosis- inhibiting activity of XIAP/BIRC4 by promoting XIAP/BIRC4 ubiquitination and degradation through the ubiquitin-proteasome pathway. Isoform 3 also disrupts XIAP/BIRC4 interacting with processed caspase-9 and promotes caspase-3 activation. Isoform 1 is defective in the capacity to down-regulate the XIAP/BIRC4 abundance. Homodimer. Interacts with NGFRAP1/BEX3. Interacts with BIRC2/c-IAP1, BIRC3/c-IAP2, XIAP/BIRC4, BIRC6/bruce and BIRC7/livin. Interacts with the monomeric and dimeric form of BIRC5/survivin. Ubiquitously expressed with highest expression in testis. Expression is also high in heart, liver, kidney, spleen, prostate and ovary. Low in brain, lung, thymus and peripheral blood leukocytes. Isoform 3 is ubiquitously expressed. 3 isoforms of the human protein are produced by alternative splicing. Note: This description may include information from UniProtKB.
Protein type: Apoptosis; Mitochondrial
Chromosomal Location of Human Ortholog: 12q24.31
Cellular Component: cytosol; internal side of plasma membrane; mitochondrial intermembrane space; mitochondrion
Molecular Function: protein binding
Biological Process: apoptosis; caspase activation; induction of apoptosis via death domain receptors; positive regulation of apoptosis
Disease: Deafness, Autosomal Dominant 64
Reference #:  Q9NR28 (UniProtKB)
Alt. Names/Synonyms: 0610041G12Rik; DBLOH; DIABLO; diablo homolog (Drosophila); Diablo homolog, mitochondrial; DIABLO-S; Direct IAP-binding protein with low pI; FLJ10537; FLJ25049; mitochondrial Smac protein; Second mitochondria-derived activator of caspase; SMAC; SMAC3
Gene Symbols: DIABLO
Molecular weight: 27,131 Da
Basal Isoelectric point: 5.68  Predict pI for various phosphorylation states
CST Pathways:  Apoptosis Regulation  |  Death Receptor Signaling  |  Inhibition of Apoptosis  |  Mitochondrial Control of Apoptosis
Protein-Specific Antibodies or siRNAs from Cell Signaling Technology® Total Proteins
Select Structure to View Below


Protein Structure Not Found.
Download PyMol Script
Download ChimeraX Script

STRING  |  cBioPortal  |  Wikipedia  |  Reactome  |  neXtProt  |  Protein Atlas  |  BioGPS  |  Scansite  |  Pfam  |  RCSB PDB  |  Phospho3D  |  Phospho.ELM  |  NetworKIN  |  UniProtKB  |  Entrez-Gene  |  GenPept  |  Ensembl Gene  |  Ensembl Protein