Temporal expression of respiratory genes in an enrichment culture containing Dehaloccoides ethenogenes
Article Abstract:
Numerous genes from Dehalococcoides ethenogenes strain 195 were targeted, which serve as potential bioindicators of reductive dechlorination to describe their expression profiles over course of a tetrachloroethene (PCE) feeding cycle. The data provides insight into the relative expression levels and temporal expression variability of Dehalococcoides ethenogenes respiratory orxidoreductase genes in mixed cultures and suggest that they serve as good bioindicators of PCE reductive dechlorination.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 2006
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Analysis of amino acid residues involved in catalysis of polyethylene glycol dehydrogenase from Sphingopyxis terrae, using three-dimensional molecular modeling-based kinetic characterization of mutants
Article Abstract:
Polyethylene glycol dehydrogenase (PEGDH) from Sphingopyxis terrae is composed of 535 amino acid residues and one flavin adenine dinucleotide per monomer protein in a homodimeric structure. Based on three-dimensional molecular modeling and kinetic characterization of wild-type PEGDH and mutant PEGDHs constructed by site-directed mutagenesis, residues potentially involved in catalysis and substrate binding were found in the vicinity of the flavin ring.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 2006
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Key role of cysteine residues in catalysis and subcellular localization of sulfur oxygenase-reductase of Acidianus tengchogenisis
Article Abstract:
A study was conducted for site-directed mutagenesis of all cysteine residues of the Acidianus (A.) tengchongensis sulfur oxygenase-reductases (SOR) protein and established that all of the cysteine residues are very important to SOR activities. It was found that these enzymes are located in close proximity on the membrane to catalyze sulfur oxidation in A. tengchongensis.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 2005
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