Effect of active site and surface mutations on the reduction potential of yeast cytochrome c peroxidase and spectroscopic properties of the oxidized and reduced enzyme.

Abstract excerpt

The reduction potentials of 22 yeast cytochrome c peroxidase (CcP) mutants were determined at pH 7.0 in order to determine the effect of both heme pocket and surface mutations on the Fe(III)/Fe(II) redox couple of CcP, as well as to determine the range in redox potentials that could be obtained through point mutations in the enzyme. Spectroscopic properties of the Fe(III) and Fe(II) forms of the mutant enzymes...

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