GIPC PDZ Domain Containing Family, Member 2 (GIPC2)

GIPC2 encoded a 315-amino-acid protein with a central PDZ domain, which showed 62.0% total-amino-acid identity with GIPC1. Both GIPC2 gene on human chromosome 1 and GIPC1 gene on human chromosome 19p13.1 were found to consist of 6 exons. Exon-intron structures of GIPC2 gene and GIPC1 gene were well conserved. GIPC2 mRNA was relatively highly expressed in ascending colon, followed by kidney and pancreas. Among 3.7-, 2.6-, and 1.7-kb GIPC2 mRNAs generated due to alternative polyadenylation, 2.6-kb GIPC2 mRNA was the major GIPC2 transcript in adult kidney. Expression of GIPC2 mRNA was significantly down-regulated in 6 out of 14 cases of primary kidney tumors, in 5 out of 11 cases of primary colon tumors, and in 1 out of 7 cases of primary rectal tumors.