Boronat S, Domènech A, Paulo E, Calvo IA, García-Santamarina S, García P, Encinar del Dedo J, Barcons A, Serrano E, Carmona M, Hidalgo E. Thiol-based H2O2 signalling in microbial systems.
Redox Biol 2014;
2:395-9. [PMID:
24563858 PMCID:
PMC3926117 DOI:
10.1016/j.redox.2014.01.015]
[Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2013] [Accepted: 01/16/2014] [Indexed: 11/19/2022] Open
Abstract
Cysteine residues, and in particular their thiolate groups, react not only with reactive oxygen species but also with electrophiles and with reactive nitrogen species. Thus, cysteine oxidation has often been linked to the toxic effects of some of these reactive molecules. However, thiol-based switches are common in protein sensors of antioxidant cascades, in both prokaryotic and eukaryotic organisms. We will describe here three redox sensors, the transcription factors OxyR, Yap1 and Pap1, which respond by disulfide bond formation to hydrogen peroxide stress, focusing specially on the differences among the three peroxide-sensing mechanisms.
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