Biology:UDP-N-acetylgalactosamine diphosphorylase

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Short description: Class of enzymes
UDP-N-acetylgalactosamine diphosphorylase
Identifiers
EC number2.7.7.83
Databases
IntEnzIntEnz view
BRENDABRENDA entry
ExPASyNiceZyme view
KEGGKEGG entry
MetaCycmetabolic pathway
PRIAMprofile
PDB structuresRCSB PDB PDBe PDBsum

UDP-N-acetylgalactosamine diphosphorylase (EC 2.7.7.83) is an enzyme with systematic name UTP:N-acetyl-alpha-D-galactosamine-1-phosphate uridylyltransferase.[1][2] This enzyme catalyses the following chemical reaction

UTP + N-acetyl-alpha-D-galactosamine 1-phosphate [math]\displaystyle{ \rightleftharpoons }[/math] diphosphate + UDP-N-acetyl-alpha-D-galactosamine

The enzyme from plants and animals also acts on N-acetyl-alpha-D-glucosamine 1-phosphate.

References

  1. "A 17-amino acid insert changes UDP-N-acetylhexosamine pyrophosphorylase specificity from UDP-GalNAc to UDP-GlcNAc". The Journal of Biological Chemistry 273 (42): 27055–7. October 1998. doi:10.1074/jbc.273.42.27055. PMID 9765219. 
  2. "Crystal structures of two human pyrophosphorylase isoforms in complexes with UDPGlc(Gal)NAc: role of the alternatively spliced insert in the enzyme oligomeric assembly and active site architecture". The EMBO Journal 20 (22): 6191–202. November 2001. doi:10.1093/emboj/20.22.6191. PMID 11707391. 

External links