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Validation of N-myristoyltransferase as an antimalarial drug target using an integrated chemical biology approach

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Author(s)

  • Megan H. Wright
  • Barbara Clough
  • Mark D. Rackham
  • Kaveri Rangachari
  • James A. Brannigan
  • Munira Grainger
  • David K. Moss
  • Andrew R. Bottrill
  • William P. Heal
  • Malgorzata Broncel
  • Remigiusz A. Serwa
  • Declan Brady
  • David J. Mann
  • Robin J. Leatherbarrow
  • Rita Tewari
  • Anthony J. Wilkinson
  • Anthony A. Holder
  • Edward W. Tate

Department/unit(s)

Publication details

JournalNature Chemistry
DateE-pub ahead of print - 22 Dec 2013
DatePublished (current) - Feb 2014
Issue number2
Volume6
Number of pages10
Pages (from-to)112-121
Early online date22/12/13
Original languageEnglish

Abstract

Malaria is an infectious disease caused by parasites of the genus Plasmodium, which leads to approximately one million deaths per annum worldwide. Chemical validation of new antimalarial targets is urgently required in view of rising resistance to current drugs. One such putative target is the enzyme N-myristoyltransferase, which catalyses the attachment of the fatty acid myristate to protein substrates (N-myristoylation). Here, we report an integrated chemical biology approach to explore protein myristoylation in the major human parasite P. falciparum, combining chemical proteomic tools for identification of the myristoylated and glycosylphosphatidylinositol-anchored proteome with selective small-molecule N-myristoyltransferase inhibitors. We demonstrate that N-myristoyltransferase is an essential and chemically tractable target in malaria parasites both in vitro and in vivo, and show that selective inhibition of N-myristoylation leads to catastrophic and irreversible failure to assemble the inner membrane complex, a critical subcellular organelle in the parasite life cycle. Our studies provide the basis for the development of new antimalarials targeting N-myristoyltransferase.

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