Alteration of the substrate range of haloalkane dehalogenase by site-directed mutagenesis.

Abstract

We attempted to expand the range of chlorinated solvents degraded by Xanthobacter autotrophicus GJ10 to include trichloroethylene by the rational modification of the enzyme haloalkane dehalogenase. The amino acids Phe164, Asp170, Phe172 and Trp175 were individually replaced with alanine by site-directed mutagenesis. All substitutions produced enzymes with… (More)

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