Reactive amino acid residues involved in glutamate-binding of human glutamate dehydrogenase isozymes.

Abstract excerpt

In the present study, the cassette mutagenesis at several putative positions (K94, G96, K118, K130, or D172) was performed to examine the residues involved in the glutamate-binding of the human glutamate dehydrogenase isozymes (hGDH1 and hGDH2). None of the mutations tested affected the expression or stability of the proteins. There was dramatic reduction in the catalytic efficiency in mutant proteins at K94,...

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