PUMA Human Recombinant Protein

This gene encodes a member of the BCL-2 family of proteins. This family member belongs to the BH3-only pro-apoptotic subclass. The protein cooperates with direct activator proteins to induce mitochondrial outer membrane permeabilization and apoptosis. It can bind to anti-apoptotic Bcl-2 family members to induce mitochondrial dysfunction and caspase activation. Because of its pro-apoptotic role, this gene is a potential drug target for cancer therapy and for tissue injury. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Dec 2011]

BBC3B: Essential mediator of p53/TP53-dependent and p53/TP53- independent apoptosis. Isoform 3 fails to show any growth- inhibitory or apoptotic activity. Induced by DNA damage, glucocorticoid treatment, growth factor deprivation and p53/TP53. {ECO:0000269|PubMed:11463392}. Isoform 3 does not interact with BCL2. 4 isoforms of the human protein are produced by alternative splicing

Protein type: Apoptosis; Mitochondrial

Chromosomal Location of Human Ortholog: 19q13.3-q13.4

Cellular Component: mitochondrial outer membrane; mitochondrion; cytosol

Molecular Function: protein binding

Biological Process: caspase activation; release of cytochrome c from mitochondria; positive regulation of protein homooligomerization; apoptosis; positive regulation of neuron apoptosis; release of sequestered calcium ion into cytosol; reduction of endoplasmic reticulum calcium ion concentration; determination of adult life span; response to DNA damage stimulus; negative regulation of growth