Control of protein function through oxidation and reduction of persulfidated states

Autor: Takaaki Akaike, Edward E. Schmidt, Justin R. Prigge, Elias S.J. Arnér, Tsuyoshi Takata, Tomoaki Ida, N. Balog, Yosuke Funato, Péter Nagy, Yoshito Kumagai, Qing Cheng, Hiroaki Miki, Yumi Abiko, Markus Dagnell, Éva Dóka, Akira Nishimura, Jon M. Fukuto, B. Espinosa, Nho Cong Luong
Rok vydání: 2020
Předmět:
Zdroj: Science Advances
ISSN: 2375-2548
DOI: 10.1126/sciadv.aax8358
Popis: Thioredoxin system–mediated persulfidation of Cys residues controls protein function and protects them from oxidative stress.
Irreversible oxidation of Cys residues to sulfinic/sulfonic forms typically impairs protein function. We found that persulfidation (CysSSH) protects Cys from irreversible oxidative loss of function by the formation of CysSSO1-3H derivatives that can subsequently be reduced back to native thiols. Reductive reactivation of oxidized persulfides by the thioredoxin system was demonstrated in albumin, Prx2, and PTP1B. In cells, this mechanism protects and regulates key proteins of signaling pathways, including Prx2, PTEN, PTP1B, HSP90, and KEAP1. Using quantitative mass spectrometry, we show that (i) CysSSH and CysSSO3H species are abundant in mouse liver and enzymatically regulated by the glutathione and thioredoxin systems and (ii) deletion of the thioredoxin-related protein TRP14 in mice altered CysSSH levels on a subset of proteins, predicting a role for TRP14 in persulfide signaling. Furthermore, selenium supplementation, polysulfide treatment, or knockdown of TRP14 mediated cellular responses to EGF, suggesting a role for TrxR1/TRP14-regulated oxidative persulfidation in growth factor responsiveness.
Databáze: OpenAIRE