Naphthalene degradation via salicylate and gentisate by Rhodococcus sp. strain B4
Article Abstract:
The pathway for naphthalene degradation in Rhodococcus sp. strain B4 was elucidated. Enzyme and product assays showed that the pathwayfor naphthalene degradation proceeds from naphthalene to 1,2- dihydroxynaphthalene to salicylaldehyde to salicylate to gentisate to maleylpyruvate and to glutathione. The key enzymes 1,2-dihydroxynaphthalene oxygenase requires NADH as a cofactor, while the salicylate 5-hydroxylase requires NADPH, ATP and coenzyme A as cofactors. This is the first report of a hydroxylase involved in the catabolism of an aromatic which requires ATP and coenzyme A.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1992
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Microbial oxidation of dimethylnaphthalene isomers
Article Abstract:
The isolation of 2,6-dimethylnaphthalene (2,6-DMN)-utilizing bacteria was described. The strains were identified as Alcaligenes sp. strain D-59 and Pseudomonas sp. strains D-87 and D-186. Strain D-87 grew on 2,6-DMN as the sole source of carbon and energy and oxidized 2,6-DMN to form 2-hydroxymethyl-6-methylnaphthalene, 6-methylnaphthalene-2-carboxylic acid and 2,6-naphthalene dicarboxylic acid (2,6-NDCA). The formation of 2,6-NDCA from 2,6-DMN indicated the presence of a new metabolic pathway of 2,6-DMN degradation.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1993
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Isolation and characterization of a fluorene-degrading bacterium: identification of ring oxidation and ring fission products
Article Abstract:
An Arthrobacter sp. strain, designated F101, was isolated from a fluorene enrichment culture inoculated with a preexisting phenanthrene-degrading mixed culture. Characterization studies showed that strain F101 could utilize fluorene as sole carbon and energy source. Thin layer chromatographic analyses of the degradation products detected 9-fluorenol, 9H-fluoren-9-one and 3,4-dihydrocoumarin as well as another unidentified metabolite. The results suggest that strain F101 degrades fluorene via two different pathways.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1992
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- Abstracts: Substrate preferences in biodesulfurization of diesel range fuels by Rhodococcus sp. strain ECRD-1. Fate of selenate and selenite metabolized by Rhodobacter sphaeroides
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