NMR studies uncover alternate substrates for dihydrodipicolinate synthase and suggest that dihydrodipicolinate reductase is also a dehydratase.

J. Med. Chem.2010 Jun 24;53(12):4808-12. doi:10.1021/jm100349s

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Despite extensive effort, the drug target dihydrodipicolinate synthase (DHDPS) continues to evade effective inhibition. We used NMR spectroscopy to examine the substrate specificity of this enzyme and found that two pyruvate analogues previously classified as weak competitive inhibitors were turned over productively by DHDPS. Four other analogues were confirmed not to be substrates. Finally, our examination of the natural product of DHDPS and its degradation revealed that dihydrodipicolinate reductase (DHDPR) possesses previously unrecognized dehydratase activity.

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NMR studies uncover alternate substrates for dihydrodipicolinate synthase and suggest that dihydrodipicolinate reductase is also a dehydratase.

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