Phosphatidylinositol glycan anchor biosynthesis class U protein is a protein that in humans is encoded by the PIGUgene.[1][2][3]
The protein encoded by this gene shares similarity with Saccharomyces cerevisiae Cdc91, a predicted integral membrane protein that may function in cell division control. The protein encoded by this gene is the fifth subunit of GPI transamidase that attaches GPI-anchors to proteins.[3]
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Vainauskas S, Menon AK (2004). "A conserved proline in the last transmembrane segment of Gaa1 is required for glycosylphosphatidylinositol (GPI) recognition by GPI transamidase". J. Biol. Chem. 279 (8): 6540–5. doi:10.1074/jbc.M312191200. PMID14660601.
Otsuki T, Ota T, Nishikawa T, et al. (2007). "Signal sequence and keyword trap in silico for selection of full-length human cDNAs encoding secretion or membrane proteins from oligo-capped cDNA libraries". DNA Res. 12 (2): 117–26. doi:10.1093/dnares/12.2.117. PMID16303743.