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Glucose dehydrogenase of a rhizobacterial strain of Enterobacter asburiae involved in mineral phosphate solubilization shares properties and sequence homology with other members of enterobacteriaceae

Glucose dehydrogenase of a rhizobacterial strain of Enterobacter asburiae involved in mineral... Glucose dehydrogenase (GDH) of Gram-negative bacteria is a membrane bound enzyme catalyzing the oxidation of glucose to gluconic acid and is involved in the solubilization of insoluble mineral phosphate complexes. A 2.4 kb glucose dehydrogenase gene (gcd) of Enterobacter asburiae sharing extensive homology to the gcd of other enterobacteriaceae members was cloned in a PCR-based directional genome walking approach and the expression confirmed in Escherichia coli YU423 on both MacConkey glucose agar and hydroxyapatite (HAP) containing media. Mineral phosphate solubilization by the cloned E. asburiae gcd was confirmed by the release of significant amount of phosphate in HAP containing liquid medium. gcd was over expressed in E. coli AT15 (gcd::cm) and the purified recombinant protein had a high affinity to glucose, and oxidized galactose and maltose with lower affinities. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Indian Journal of Microbiology Springer Journals

Glucose dehydrogenase of a rhizobacterial strain of Enterobacter asburiae involved in mineral phosphate solubilization shares properties and sequence homology with other members of enterobacteriaceae

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References (23)

Publisher
Springer Journals
Copyright
Copyright © 2007 by Association of Microbiologists of India
Subject
Life Sciences; Medical Microbiology ; Microbiology
ISSN
0046-8991
eISSN
0973-7715
DOI
10.1007/s12088-007-0025-7
pmid
23100654
Publisher site
See Article on Publisher Site

Abstract

Glucose dehydrogenase (GDH) of Gram-negative bacteria is a membrane bound enzyme catalyzing the oxidation of glucose to gluconic acid and is involved in the solubilization of insoluble mineral phosphate complexes. A 2.4 kb glucose dehydrogenase gene (gcd) of Enterobacter asburiae sharing extensive homology to the gcd of other enterobacteriaceae members was cloned in a PCR-based directional genome walking approach and the expression confirmed in Escherichia coli YU423 on both MacConkey glucose agar and hydroxyapatite (HAP) containing media. Mineral phosphate solubilization by the cloned E. asburiae gcd was confirmed by the release of significant amount of phosphate in HAP containing liquid medium. gcd was over expressed in E. coli AT15 (gcd::cm) and the purified recombinant protein had a high affinity to glucose, and oxidized galactose and maltose with lower affinities.

Journal

Indian Journal of MicrobiologySpringer Journals

Published: Jul 8, 2007

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