UDP-N-acetylglucosamine 4,6-dehydratase (configuration-inverting)

UDP-N-acetylglucosamine 4,6-dehydratase (configuration-inverting) (EC 4.2.1.115, FlaA1, UDP-N-acetylglucosamine 5-inverting 4,6-dehydratase, PseB, UDP-N-acetylglucosamine hydro-lyase (inverting, UDP-2-acetamido-2,6-dideoxy-β-L)arabino-hex-4-ulose-forming)) is an enzyme with systematic name UDP-N-acetyl-α-D-glucosamine hydro-lyase (inverting; UDP-2-acetamido-2,6-dideoxy-β-L-arabino-hex-4-ulose-forming). This enzyme catalyses the following chemical reaction

UDP-N-acetyl-α-D-glucosamine

\rightleftharpoons

UDP-2-acetamido-2,6-dideoxy-β-L-arabino-hex-4-ulose + H₂O

This enzyme contains NADP as a cofactor.

References

Ishiyama N, Creuzenet C, Miller WL, Demendi M, Anderson EM, Harauz G, Lam JS, Berghuis AM (August 2006). "Structural studies of FlaA1 from Helicobacter pylori reveal the mechanism for inverting 4,6-dehydratase activity". The Journal of Biological Chemistry. 281 (34): 24489–95. doi:10.1074/jbc.m602393200. PMID 16651261.
Schirm M, Soo EC, Aubry AJ, Austin J, Thibault P, Logan SM (June 2003). "Structural, genetic and functional characterization of the flagellin glycosylation process in Helicobacter pylori". Molecular Microbiology. 48 (6): 1579–92. doi:10.1046/j.1365-2958.2003.03527.x. PMID 12791140.
Schoenhofen IC, McNally DJ, Brisson JR, Logan SM (September 2006). "Elucidation of the CMP-pseudaminic acid pathway in Helicobacter pylori: synthesis from UDP-N-acetylglucosamine by a single enzymatic reaction". Glycobiology. 16 (9): 8C – 14C. doi:10.1093/glycob/cwl010. PMID 16751642.

External links

UDP-N-acetylglucosamine+4,6-dehydratase+(configuration-inverting) at the U.S. National Library of Medicine Medical Subject Headings (MeSH)

v t e Carbon–oxygen lyases (EC 4.2) (primarily dehydratases)
4.2.1: Hydro-Lyases	Carbonic anhydrase Fumarase Aconitase Enolase Alpha Enolase 2 Enoyl-CoA hydratase/3-Hydroxyacyl ACP dehydrase Methylglutaconyl-CoA hydratase Tryptophan synthase Cystathionine beta synthase Porphobilinogen synthase 3-Isopropylmalate dehydratase Urocanase Uroporphyrinogen III synthase Nitrile hydratase
4.2.2: Acting on polysaccharides	Hyaluronate lyase Pectin lyase
4.2.3: Acting on phosphates	Threonine synthase
4.2.99: Other	Carboxymethyloxysuccinate lyase Hydroperoxide lyase

v t e Enzymes
Activity	Active site Binding site Catalytic triad Oxyanion hole Enzyme promiscuity Diffusion-limited enzyme Cofactor Enzyme catalysis
Regulation	Allosteric regulation Cooperativity Enzyme inhibitor Enzyme activator
Classification	EC number Enzyme superfamily Enzyme family List of enzymes
Kinetics	Enzyme kinetics Eadie–Hofstee diagram Hanes–Woolf plot Lineweaver–Burk plot Michaelis–Menten kinetics
Types	EC1 Oxidoreductases (list) EC2 Transferases (list) EC3 Hydrolases (list) EC4 Lyases (list) EC5 Isomerases (list) EC6 Ligases (list) EC7 Translocases (list)

Portal:

Biology

Category:

EC 4.2.1