UDP-N-acetilglukozamin difosforilaza

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UDP-N-acetilglukozamin difosforilaza
UDP-N-acetilglukozamin difosforilaza homotrimer, Mycobacterium tuberculosis
Identifikatori
EC broj 2.7.7.23
CAS broj 2601781
IntEnz IntEnz view
BRENDA BRENDA entry
ExPASy NiceZyme view
KEGG KEGG entry
MetaCyc metabolic pathway
PRIAM profile
PDB RCSB PDB PDBe PDBj PDBsum

UDP-N-acetilglukozamin difosforilaza (EC 2.7.7.23, UDP-N-acetilglukozamin pirofosforilaza, uridin difosfoacetilglukozamin pirofosforilaza, UTP:2-acetamido-2-dezoksi-alfa-D-glukoza-1-fosfat uridililtransferaza, UDP-GlcNAc pirofosforilaza, GlmU uridililtransferaza, acetilglukozamin 1-fosfat uridililtransferaza, UDP-acetilglukozamin pirofosforilaza, uridin difosfat-N-acetilglukozamin pirofosforilaza, uridin difosfoacetilglukozamin fosforilaza, acetilglukozamin 1-fosfat uridililtransferaza) je enzim sa sistematskim imenom UTP:N-acetil-alfa-D-glukozamin-1-fosfat uridililtransferaza.[1][2][3][4][5][6][7] Ovaj enzim katalizuje sledeću hemijsku reakciju

UTP + N-acetil-alfa-D-glukozamin 1-fosfat difosfat + UDP-N-acetil-alfa-D-glukozamin

Ovaj enzim učestvuje u biosintezi acetamido šećera kod bakterija i arheja.

Reference[uredi | uredi kod]

  1. Pattabiramin, T.N. and Bachhawat, B.K. (1961). „Purification of uridine diphosphoacetylglucosamine pyrophosphorylase from sheep brain”. Biochim. Biophys. Acta 50: 129-134. PMID 13733356. 
  2. Strominger, J.L. and Smith, M.S. (1959). „Uridine diphosphoacetylglucosamine pyrophosphorylase”. J. Biol. Chem. 234: 1822-1827. PMID 13672971. 
  3. Mengin-Lecreulx, D. and van Heijenoort, J. (1994). „Copurification of glucosamine-1-phosphate acetyltransferase and N-acetylglucosamine-1-phosphate uridyltransferase activities of Escherichia coli: characterization of the glmU gene product as a bifunctional enzyme catalyzing two subsequent steps in the pathway for UDP-N-acetylglucosamine synthesis”. J. Bacteriol. 176: 5788-5795. PMID 8083170. 
  4. Gehring, A.M., Lees, W.J., Mindiola, D.J., Walsh, C.T. and Brown, E.D. (1996). „Acetyltransfer precedes uridylyltransfer in the formation of UDP-N-acetylglucosamine in separable active sites of the bifunctional GlmU protein of Escherichia coli”. Biochemistry 35: 579-585. PMID 8555230. 
  5. Wang-Gillam, A., Pastuszak, I. and Elbein, A.D. (1998). „A 17-amino acid insert changes UDP-N-acetylhexosamine pyrophosphorylase specificity from UDP-GalNAc to UDP-GlcNAc”. J. Biol. Chem. 273: 27055-27057. PMID 9765219. 
  6. Olsen, L.R. and Roderick, S.L. (2001). „Structure of the Escherichia coli GlmU pyrophosphorylase and acetyltransferase active sites”. Biochemistry 40: 1913-1921. PMID 11329257. 
  7. Peneff, C., Ferrari, P., Charrier, V., Taburet, Y., Monnier, C., Zamboni, V., Winter, J., Harnois, M., Fassy, F. and Bourne, Y. (2001). „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”. EMBO J. 20: 6191-6202. PMID 11707391. 

Literatura[uredi | uredi kod]

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