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J Am Chem Soc. 2010 Feb 3;132(4):1230-1. doi: 10.1021/ja909947a.

The structural basis of Cryptosporidium -specific IMP dehydrogenase inhibitor selectivity.

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1
Departments of Biology, Brandeis University, MS009, 415 South Street, Waltham, Massachusetts 02454, USA.

Erratum in

  • J Am Chem Soc. 2010 May 12;132(18):6610.

Abstract

Cryptosporidium parvum is a potential biowarfare agent, an important AIDS pathogen, and a major cause of diarrhea and malnutrition. No vaccines or effective drug treatment exist to combat Cryptosporidium infection. This parasite relies on inosine 5'-monophosphate dehydrogenase (IMPDH) to obtain guanine nucleotides, and inhibition of this enzyme blocks parasite proliferation. Here, we report the first crystal structures of CpIMPDH. These structures reveal the structural basis of inhibitor selectivity and suggest a strategy for further optimization. Using this information, we have synthesized low-nanomolar inhibitors that display 10(3) selectivity for the parasite enzyme over human IMPDH2.

PMID:
20052976
PMCID:
PMC2819028
DOI:
10.1021/ja909947a
[Indexed for MEDLINE]
Free PMC Article

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