Role of threonine 190 in modulating the catalytic function of malate dehydrogenase from a thermophile Thermus flavus.

Abstract excerpt

Random mutagenesis of malate dehydrogenase from a thermophilic bacterium, Thermus flavus AT-62, had revealed that a Thr190----Ile replacement near the essential catalytic residue His187 caused marked modulation of the catalytic properties. For further exploration of a role of the residue at this position, this residue was substituted with each of the other amino acids by site-directed mutagenesis. Most of the...

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