Description_x000D_ General description_x000D_ Guanylyl cyclase C (GCC, or GUCY2C; MIM 601330) produces cGMP following the binding of either endogenous ligands or heat-stable enterotoxins secreted by E. coli and other enteric bacteria. Activation of GCC initiates a signaling cascade that leads to phosphorylation of the cystic fibrosis transmembrane conductance regulator (CFTR; MIM 602421), followed by a net efflux of ions and water into the intestinal lumen. IKEPP is a regulatory protein that associates with GCC and regulates the amount of cGMP produced following receptor stimulation (Scott et al., 2002 [PubMed 11950846]).[supplied by OMIM_x000D_ Immunogen_x000D_ PDZD3 (NP_079067.2, 1 a.a. ~ 491 a.a) full-length human protein._x000D_ Sequence_x000D_ MEKAADLQDTASLTLKFKFNPKLGIDNPVLSLAEDHDPYDPWSLERPRFCLLSKEEGKSFGFHLQQELGRAGHVVCRVDPGTSAQRQGLQEGDRILAVNNDVVEHEDYAVVVRRIRASSPRVLLTVLARHAHDVARAQLGEDAHLCPTLGPGVRPRLCHIVKDEGGFGFSVTHGNQGPFWLVLSTGGAAERAGVPPGARLLEVNGLWQSGQQVTLLVAGPEVEEQCRQLGLPLAAPLAEGWALPTKPRCLHLEKGPQGFGFLLREEKGLDGRPGQFLWEVDPGLPAKKAGMQAGDRLVAVAGESVEGLGHEETVSRIQGQGSCVSLTVVDPEADRFFSMVRLSPLLFLENTEAPASPQGSSSASLVETEDPSLEDTSVPSVPLGSRQCFLYPGPGGSYGFRLSCVASGPRLFISQVTPGGSAARAGLQVGDVILEVNGYPVGGQNDLERLQQLPEAEPPLCLKLAARSLRGLEAWIPPGAAEDWALASDLL_x000D_ Physical form_x000D_ Solution in phosphate buffered saline, pH 7.4