Article
Enhancement of the enzymatic activity of Escherichia coli acetyl esterase by a double mutation obtained by random mutagenesis.
Bioscience, biotechnology, and biochemistry - 1 Jan 2012
Kobayashi Ryuichi, Hirano Nobutaka, Kanaya Shigenori, Haruki Mitsuru
Abstract excerpt
A double mutant of Escherichia coli acetyl esterase (EcAE) with enhanced enzymatic activity was obtained by random mutagenesis using error-prone PCR and screening for enzymatic activity by observing halo formation on a tributyrin plate. The mutant contained Leu97Phe (L97F) and Leu209Phe (L209F) mutations. Single mutants L97F and L209F were also constructed and analyzed for kinetic parameters, as well as double...
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