Nitrogen monoxide (NO) storage and transport by dinitrosyl-dithiol-iron complexes: Long-lived NO that is trafficked by interacting proteins

Yohan Suryo Rahmanto, Danuta S. Kalinowski, Darius J.R. Lane, Hiu Chuen Lok, Vera Richardson, Des R. Richardson

Research output: Contribution to journalShort survey

Abstract

Nitrogen monoxide (NO) markedly affects intracellular iron metabolism, and recent studies have shown that molecules traditionally involved in drug resistance, namely GST and MRP1 (multidrug resistance-associated protein 1), are critical molecular players in this process. This is mediated by interaction of these proteins with dinitrosyl-dithiol-iron complexes (Watts, R. N., Hawkins, C., Ponka, P., and Richardson, D. R. (2006) Proc. Natl. Acad. Sci. U.S.A. 103, 7670-7675; Lok, H. C., Suryo Rahmanto, Y., Hawkins, C. L., Kalinowski, D. S., Morrow, C. S., Townsend, A. J., Ponka, P., and Richardson, D. R. (2012) J. Biol. Chem. 287, 607-618). These complexes are bioavailable, have a markedly longer half-life compared with free NO, and form in cells after an interaction between iron, NO, and glutathione. The generation of dinitrosyl-dithiol-iron complexes acts as a common currency for NO transport and storage by MRP1 and GST P1-1, respectively. Understanding the biological trafficking mechanisms involved in the metabolism of NO is vital for elucidating its many roles in cellular signaling and cytotoxicity and for development of new therapeutic targets.

Original languageEnglish (US)
Pages (from-to)6960-6968
Number of pages9
JournalJournal of Biological Chemistry
Volume287
Issue number10
DOIs
StatePublished - Mar 2 2012

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Biology
  • Cell Biology

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