A portion of amino acids 81-112 from the human protein was used as the immunogen for the PIGC antibody.
Phosphatidylinositol N-acetylglucosaminyltransferase subunit C is part of the complex catalyzing the transfer of N- acetylglucosamine from UDP-N-acetylglucosamine to phosphatidylinositol, the first step of GPI biosynthesis.