Caspase activation and recruitment domain of CARD10-like proteins
Caspase activation and recruitment domain (CARD) similar to that found in CARD10, also known as CARMA3 (caspase recruitment domain-containing membrane-associated guanylate kinase protein 3) or BIMP1. The CARMA3-BCL10-MALT1 signalosome plays a role in the GPCR-induced NF-kB activation. CARMA3 is more widely expressed than CARMA1, which is found only in hematopoietic cells. In endothelial and smooth muscle cells, CARMA3-mediated NF-kB activation induces pro-inflammatory signals within the vasculature and is a key factor in atherogenesis. In bronchial epithelial cells, CARMA3-mediated NF-kB signaling is important for the development of allergic airway inflammation. In general, CARDs are death domains (DDs) found associated with caspases. They are known to be important in the signaling pathways for apoptosis, inflammation, and host-defense mechanisms. DDs are protein-protein interaction domains found in a variety of domain architectures. Their common feature is that they form homodimers by self-association or heterodimers by associating with other members of the DD superfamily including PYRIN and DED (Death Effector Domain). They serve as adaptors in signaling pathways and can recruit other proteins into signaling complexes.
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