Polyclonal antibody to CARD8 (Tucan)

This antibody recognizes TUCAN, a 431 amino acid protein. TUCAN (tumor up-regulated CARD-containing antagonist of caspase nine) also known as CARD8 is a CARD domain containing protein. Proteins containing a CARD (caspase-associated recruitment domain) domain are key regulators of cell death, cell survival and cytokine production. TUCAN is an anti-apoptotic CARD protein that can protect tumors from cell death stimuli, and is overexpressed in certain forms of cancer. TUCAN has been shown to inhibit caspase-9 activation by binding to the CARD region of pro-caspase-9, thereby suppressing the formation of the Apaf-1-caspase-9 apoptotic complex and apoptosis. Additionally, a TUCAN isoform has been described that blocks both caspase-8 and caspase-9 mediated apoptosis. However, in some tumors, TUCAN play a role in modulating NFkB transcription factor survivial signaling pathways.