4-Toluene sulfonate methyl-monooxygenase from Comamonas testosteroni T-2: purification and some properties of the oxygenase component
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4-Toluene sulfonate methyl-monooxygenase from Comamonas testosteroni T-2: purification and some properties of the oxygenase component.
Comamonas testosteroni T-2 synthesizes an inducible enzyme system that oxygenates 4-toluene sulfontate (TS) to 4-sulfobenzyl alcohol when grown in TS-salts medium. We purified this TS methyl-monooxygenase system (TSMOS) and found it to consist of two components. A monomeric, iron-sulfur flavoprotein (component B), which has been shown to act as a reductase in the 4-sulfobenzoate dioxygenase sys...
متن کاملUptake of 4-toluene sulfonate by Comamonas testosteroni T-2.
The mechanism of transport of the xenobiotic 4-toluene sulfonate (TS) in Comamonas testosteroni T-2 was investigated. Rapid uptake of TS was observed only in cells grown with TS or 4-methylbenzoate as a carbon and energy source. Initial uptake rates under aerobic conditions showed substrate saturation kinetics, with an apparent affinity constant (Kt) of 88 microM and a maximal velocity (Vmax) o...
متن کاملTerephthalate 1,2-dioxygenase system from Comamonas testosteroni T-2: purification and some properties of the oxygenase component.
Comamonas testosteroni T-2, grown in terephthalate (TER)-salts medium, synthesizes inducible enzymes that convert TER to (1R,2S)-dihydroxy-3,5-cyclohexadiene-1,4-dicarboxylic acid (DCD) and protocatechuate (PC). Anion-exchange chromatography of cell extracts yielded two sets of fractions, R and Z, that were necessary for oxygenation of TER to DCD; we termed this activity the TER dioxygenase sys...
متن کامل4-Sulphobenzoate 3,4-dioxygenase. Purification and properties of a desulphonative two-component enzyme system from Comamonas testosteroni T-2.
Cell-free extracts of Comamonas testosteroni T-2 grown in toluene-p-sulphonate/salts medium catalyse the conversion of p-sulphobenzoate (PSB) into protocatechuate and sulphite by an NADH-requiring and Fe2(+)-activated dioxygenase. Anion-exchange chromatography of extracts yielded red (A) and yellow (B) protein fractions, both of which were necessary for dioxygenative activity. Further purificat...
متن کامل2-(2,3-Difluorophenyl)ethyl toluene-4-sulfonate
In the title compound, C(15)H(14)F(2)O(3)S, the dihedral angle between the aromatic rings is 6.19 (13)°. In the crystal, mol-ecules are linked by C-H⋯O hydrogen bonds, generating [110] chains.
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1991
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.173.12.3741-3748.1991