Modified glucose dehydrogenase

Chemistry: molecular biology and microbiology – Enzyme – proenzyme; compositions thereof; process for... – Oxidoreductase

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4353201, 435 14, 4352523, 536 232, C12N 904

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active

061035092

ABSTRACT:
The invention provides a modified pyrrolo-quinoline quinone glucose dehydrogenase (PQQGDH) enzyme protein which is modified to have a substrate specificity to glucose. The modified PQQGDH of the invention exhibits a high substrate specificity compared to the wild type PQQGDH, thus is useful in determining glucose concentration in clinical assays and food analyses. A gene coding for the modified PQQGDH and a glucose sensor comprising the modified PQQGDH are also disclosed.

REFERENCES:
patent: 5804047 (1998-09-01), Karube et al.
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Cozier GE, et al. "Structure of the quinoprotein glucose dehydrogenase of Escherichia coli modelled on that of methanol dehydrogenase from Methylobacterium extorquens" Biochem J., 1995, vol. 312, pp. 679-685, Dec. 15, 1995.
Cleton-Jansen AM, et al "Cloning, characterization and DNA sequencing of the gene encoding the Mr 50,000 quinoprotein glucose dehydrogenase from Acinetobacter calcoaceticus" Mol Gen Genet., 1989, vol. 217, pp. 430-436, Jun. 1, 1989.

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