Quinoprotein glucose dehydrogenase

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In enzymology, a quinoprotein glucose dehydrogenase (EC 1.1.5.2) is an enzyme that catalyzes the chemical reaction

D-glucose + ubiquinone \rightleftharpoons D-glucono-1,5-lactone + ubiquinol

Thus, the two substrates of this enzyme are D-glucose and ubiquinone, whereas its two products are D-glucono-1,5-lactone and ubiquinol.

This enzyme belongs to the family of oxidoreductases, specifically those acting on the CH-OH group of donor with a quinone or similar compound as acceptor. The systematic name of this enzyme class is D-glucose:ubiquinone oxidoreductase. Other names in common use include D-glucose:(pyrroloquinoline-quinone) 1-oxidoreductase, glucose dehydrogenase (PQQ-dependent), glucose dehydrogenase (pyrroloquinoline-quinone), and quinoprotein D-glucose dehydrogenase. This enzyme participates in pentose phosphate pathway. It employs one cofactor, PQQ.

References

    • Ameyama, Minoru; Nonobe Masatsugu, Hayashi Masaharu, Shinagawa Emiko, Matsushita Kazunobu, and Adachi Osao (1985). "Mode of binding of pyrroloquinoline quinone to apo-glucose dehydrogenase". Agric. Biol. Chem. 49: 1227–1231. 
    • Duine JA, Frank J, van Zeeland JK (1979). "Glucose dehydrogenase from Acinetobacter calcoaceticus: a 'quinoprotein'". FEBS. Lett. 108: 443–6. doi:10.1016/0014-5793(79)80584-0. PMID 520586. 
    • Yamada M, Sumi K, Matsushita K, Adachi O, Yamada Y (1993). "Topological analysis of quinoprotein glucose dehydrogenase in Escherichia coli and its ubiquinone-binding site". J. Biol. Chem. 268 (17): 12812–7. PMID 8509415. 
    • Dewanti AR, Duine JA (1998). "Reconstitution of membrane-integrated quinoprotein glucose dehydrogenase apoenzyme with PQQ and the holoenzyme's mechanism of action". Biochemistry. 37 (19): 6810–8. doi:10.1021/bi9722610. PMID 9578566. 
    • Oubrie A, Rozeboom HJ, Dijkstra BW (1999). "Active-site structure of the soluble quinoprotein glucose dehydrogenase complexed with methylhydrazine: a covalent cofactor-inhibitor complex". Proc. Natl. Acad. Sci. U.S.A. 96 (21): 11787–91. PMC 18364. PMID 10518528. 
    • M (2001). "C-terminal periplasmic domain of Escherichia coli quinoprotein glucose dehydrogenase transfers electrons to ubiquinone". J. Biol. Chem. 276 (51): 48356–61. doi:10.1074/jbc.M107355200. PMID 11604400. 

    External links

    The CAS registry number for this enzyme class is 81669-60-5.

    Gene Ontology (GO) codes

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