Regiospecific naphthalene monohydroxylation by a recombinant yeast producing a P4501A1–yeast reductase fused enzyme
2003
Abstract The use of a recombinant yeast producing a P4501A1–yeast reductase fused enzyme for the regiospecific hydroxylation of naphthalene to α-naphthol is reported. During the biotransformation, significant levels of naphthalene and α-naphthol were detected in the cell fraction. Initial reaction rates of up to 23 and 13 μmol/g dry cell weight/h at 5.6 and 11.2 g dcw/l, respectively, were measured. The presence of naphthalene at concentrations above aqueous phase saturation (0.45 mM) as a solid was found to increase activity only marginally while the product, α-naphthol, was found to inhibit hydroxylating activity.
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