Function
As the sensor component of the NLRP6 inflammasome, plays a crucial role in innate immunity and inflammation. In response to yet unidentified signals, initiates the formation of the inflammasome polymeric complex, made of NLRP6, PYCARD and CASP1 (or possibly CASP4/CASP11). Recruitment of proCASP1 to the inflammasome promotes its activation and CASP1-catalyzed IL1B and IL18 maturation and secretion in the extracellular milieu. The precise NLRP6 activation stimulus has not been identified yet (By similarity) (PubMed:21593405). Essential for gut mucosal self-renewal and proliferation (PubMed:21593405, PubMed:21565393, PubMed:21543645). Maintains intestinal homeostasis and a healthy intestinal microbiota (PubMed:21565393, PubMed:22763455). This function is, at least partially, mediated by IL18, and not IL1B, produced by nonhematopoietic cells (PubMed:21565393). Influences intestinal barrier function and microbial homeostasis through the regulation of goblet cell mucus secretion. Acts by promoting autophagy in goblet cells, an essential step for mucus granule exocytosis. Its role in goblet cell physiology is inflammasome-dependent, but IL1B- and IL18-independent (PubMed:24581500). During systemic bacterial infections, may negatively regulate inflammatory signaling and inhibit the influx of monocytes and neutrophils to the circulation and to the peritoneum (PubMed:22763455). May promote peripheral nerve recovery following injury via an inflammasome-independent mechanism (PubMed:26253422).
Sequence
MDAAGASCSSVDAVARELLMATLEELSQEQLKRFRHKLRDAPLDGRSIPWGRLERSDAVDLVDKLIEFYEPVPAVEMTRQVLKRSDIRDVASRLKQQQLQKLGPTSVLLSVSAFKKKYREHVLRQHAKVKERNARSVKINKRFTKLLIAPGTGAVEDELLGPLGEPEPERARRSDTHTFNRLFRGNDEESSQPLTVVLQGPAGIGKTMAAKKILYDWAAGKLYHSQVDFAFFMPCGELLERPGKRSLADLVLDQCPDRAWPVKRILAQPNRLLFILDGADELPTLPSSEATPCKDPLEATSGLRVLSGLLSQELLPGARLLVTTRHAATGRLQGRLCSPQCAEIRGFSDKDKKKYFFKFFRDERKAERAYRFVKENETLFALCFVPFVCWIVCTVLQQQLELGRDLSRTSKTTTSVYLLFITSMLKSAGTNGPRVQGELRTLCRLAREGILDHHKAQFSEEDLEKLKLRGSQVQTIFLNKKEIPGVLKTEVTYQFIDQSFQEFLAALSYLLEAERTPGTPAGGVQKLLNSDAELRGHLALTTRFLFGLLNTEGLRDIGNHFGCVVPDHVKKDTLRWVQGQSHPKGPPVGAKKTAELEDIEDAEEEEEEEEDLNFGLELLYCLYETQEEDFVRQALSSLPEIVLERVRLTRMDLEVLNYCVQCCPDGQALRLVSCGLVAAKEKKKKKKSLVKRLKGSQSTKKQPPVSLLRPLCETMTTPKCHLSVLILSHCRLPDAVCRDLSEALKVAPALRELGLLQSRLTNTGLRLLCEGLAWPKCQVKTLRMQLPDLQEVINYLVIVLQQSPVLTTLDLSGCQLPGVIVEPLCAALKHPKCSLKTLSLTSVELSENSLRDLQAVKTSKPDLSIIYSK