Pyranose dehydrogenase (acceptor)

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Pyranose dehydrogenase (acceptor) (EC 1.1.99.29, pyranose dehydrogenase, pyranose-quinone oxidoreductase, quinone-dependent pyranose dehydrogenase, PDH) is an enzyme with systematic name pyranose:acceptor oxidoreductase.^[1]^[2]^[3]^[4]^[5] This enzyme catalyses the following chemical reaction

(1) a pyranose + acceptor

\rightleftharpoons

a pyranos-2-ulose (or a pyranos-3-ulose or a pyranos-2,3-diulose) + reduced acceptor

(2) a pyranoside + acceptor

\rightleftharpoons

a pyranosid-3-ulose (or a pyranosid-3,4-diulose) + reduced acceptor

This enzyme requires FAD. A number of aldoses and ketoses in pyranose form, as well as glycosides, gluco-oligosaccharides, sucrose and lactose can act as a donor.

References

↑ Volc, J.; Kubátová, E.; Wood, D.; Daniel, G. (1997). "Pyranose 2-dehydrogenase, a novel sugar oxidoreductase from the basidiomycete fungus Agaricus bisporus". Arch. Microbiol. 167: 119–125. doi:10.1007/s002030050424. PMID 9042751.
↑ Volc, J.; Sedmera, P.; Halada, P.; Pøikyrlová, V.; Daniel, G. (1998). "C-2 and C-3 oxidation of D-Glc, and C-2 oxidation of D-Gal by pyranose dehydrogenase from Agaricus bisporus". Carbohydr. Res. 310: 151–156. doi:10.1016/s0008-6215(98)00151-7.
↑ Volc, J.; Sedmera, P.; Halada, P.; Pøikyrlová, V.; Haltrich, D. (2000). "Double oxidation of D-xylose to D-glycero-pentos-2,3-diulose (2,3-diketo-D-xylose) by pyranose dehydrogenase from the mushroom Agaricus bisporus". Carbohydr. Res. 329: 219–225. doi:10.1016/s0008-6215(00)00167-1. PMID 11086703.
↑ Volc, J.; Kubátová, E.; Daniel, G.; Sedmera, P.; Haltrich, D. (2001). "Screening of basidiomycete fungi for the quinone-dependent sugar C-2/C-3 oxidoreductase, pyranose dehydrogenase, and properties of the enzyme from Macrolepiota rhacodes". Arch. Microbiol. 176: 178–186. doi:10.1007/s002030100308. PMID 11511865.
↑ Volc, J.; Sedmera, P.; Halada, P.; Daniel, G.; Pøikyrlová, V.; Haltrich, D. (2002). "C-3 oxidation of non-reducing sugars by a fungal pyranose dehydrogenase: spectral characterization". J. Mol. Catal., B Enzym. 17: 91–100. doi:10.1016/s1381-1177(02)00014-0.

External links

Pyranose dehydrogenase (acceptor) at the US National Library of Medicine Medical Subject Headings (MeSH)

Oxidoreductases: alcohol oxidoreductases (EC 1.1)

1.1.1: NAD/NADP acceptor	3-hydroxyacyl-CoA dehydrogenase 3-hydroxybutyryl-CoA dehydrogenase Alcohol dehydrogenase Aldo-keto reductase 1A1 1B1 1B10 1C1 1C3 1C4 7A2 Aldose reductase Beta-Ketoacyl ACP reductase Carbohydrate dehydrogenases Carnitine dehydrogenase D-malate dehydrogenase (decarboxylating) DXP reductoisomerase Glucose-6-phosphate dehydrogenase Glycerol-3-phosphate dehydrogenase HMG-CoA reductase IMP dehydrogenase Isocitrate dehydrogenase Lactate dehydrogenase L-threonine dehydrogenase L-xylulose reductase Malate dehydrogenase Malate dehydrogenase (decarboxylating) Malate dehydrogenase (NADP+) Malate dehydrogenase (oxaloacetate-decarboxylating) Malate dehydrogenase (oxaloacetate-decarboxylating) (NADP+) Phosphogluconate dehydrogenase Sorbitol dehydrogenase Hydroxysteroid dehydrogenase: 3 Beta 3-beta-HSD NSDHL 11 Beta HSD11B1 HSD11B2 17 Beta

1.1.2: cytochrome acceptor	D-lactate dehydrogenase (cytochrome) D-lactate dehydrogenase (cytochrome c-553) Mannitol dehydrogenase (cytochrome)

1.1.3: oxygen acceptor	Glucose oxidase L-gulonolactone oxidase Xanthine oxidase

1.1.4: disulfide as acceptor	Vitamin K epoxide reductase Vitamin-K-epoxide reductase (warfarin-insensitive)

1.1.5: quinone/similar acceptor	Malate dehydrogenase (quinone) Quinoprotein glucose dehydrogenase

1.1.99: other acceptors	Choline dehydrogenase L2HGDH

Enzymes

Activity	Active site Binding site Catalytic triad Oxyanion hole Enzyme promiscuity Catalytically perfect enzyme Coenzyme Cofactor Enzyme catalysis Enzyme kinetics Lineweaver–Burk plot Michaelis–Menten kinetics

Regulation	Allosteric regulation Cooperativity Enzyme inhibitor

Classification	EC number Enzyme superfamily Enzyme family List of enzymes

Types	EC1 Oxidoreductases (list) EC2 Transferases (list) EC3 Hydrolases (list) EC4 Lyases (list) EC5 Isomerases (list) EC6 Ligases (list)

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