Role of arginine 138 in the catalysis and regulation of Escherichia coli dihydrodipicolinate synthase.

Abstract

In plants and bacteria, the branch point of (S)-lysine biosynthesis is the condensation of (S)-aspartate-beta-semialdehyde [(S)-ASA] and pyruvate, a reaction catalyzed by dihydrodipicolinate synthase (DHDPS, EC 4.2.1.52). It has been proposed that Arg138, a residue situated at the entrance to the active site of DHDPS, is responsible for binding the carboxyl… (More)

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