PIG-P (phosphatidylinositol N-acetylglucosaminyltransferase subunit P) is an enzyme involved in GPI anchor biosynthesis [1].

1: Initial enzyme for glycosylphosphatidylinositol biosynthesis requires PIG-P and is regulated by DPM2. Watanabe R, Murakami Y, Marmor MD, Inoue N, Maeda Y, Hino J, Kangawa K, Julius M, Kinoshita T; EMBO J 2000;19:4402-4411. PMID:10944123