Biology:PIGP

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Short description: Protein-coding gene in the species Homo sapiens


A representation of the 3D structure of the protein myoglobin showing turquoise α-helices.
Generic protein structure example

Subunit P of phosphatidylinositol N-acetylglucosaminyltransferase is an enzyme that in humans is encoded by the PIGP gene.[1][2][3]

This gene encodes an enzyme involved in the first step of glycosylphosphatidylinositol (GPI)-anchor biosynthesis. The GPI anchor is a glycolipid found on many blood cells that serves to anchor proteins to the cell surface. The encoded protein is a component of the GPI-N-acetylglucosaminyltransferase complex that catalyzes the transfer of N-acetylglucosamine (GlcNAc) from UDP-GlcNAc to phosphatidylinositol (PI). This gene is located in the Down syndrome critical region on chromosome 21 and is a candidate for the pathogenesis of Down syndrome. Alternatively spliced transcript variants encoding different isoforms have been described.[3]

References

  1. "Isolation of two novel genes, DSCR5 and DSCR6, from Down syndrome critical region on human chromosome 21q22.2". Biochem Biophys Res Commun 271 (3): 693–8. Jun 2000. doi:10.1006/bbrc.2000.2685. PMID 10814524. 
  2. "Protein levels of genes encoded on chromosome 21 in fetal Down Syndrome brain (Part V): overexpression of phosphatidyl-inositol-glycan class P protein (DSCR5)". Amino Acids 26 (3): 255–61. Jun 2004. doi:10.1007/s00726-004-0065-9. PMID 15221505. 
  3. 3.0 3.1 "Entrez Gene: PIGP phosphatidylinositol glycan anchor biosynthesis, class P". https://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene&Cmd=ShowDetailView&TermToSearch=51227. 

Further reading