Chemical characterization of the smallest S-nitrosothiol, HSNO; cellular cross-talk of H2S and S-nitrosothiols.
Chemical characterization of the smallest S-nitrosothiol, HSNO; cellular cross-talk of H2S and S-nitrosothiols.
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DOI:
10.1021/ja3009693
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发表时间:
2012-07-25
影响因子:
15
通讯作者:
Ivanovic-Burmazovic, Ivana
中科院分区:
文献类型:
--
作者:
Filipovic, Milos R.;Miljkovic, Jan Lj;Nauser, Thomas;Royzen, Maksim;Klos, Katharina;Shubina, Tatyana;Koppenol, Willem H.;Lippard, Stephen J.;Ivanovic-Burmazovic, Ivana
Dihydrogen sulfide recently emerged as a biological signaling molecule with important physiological roles and significant pharmacological potential. Chemically plausible explanations for its mechanisms of action have remained elusive, however. Here, we report that H2S reacts with S-nitrosothiols to form thionitrous acid (HSNO), the smallest S-nitrosothiol. These results demonstrate that, at the cellular level, HSNO can be metabolized to afford NO+, NO, and NO– species, all of which have distinct physiological consequences of their own. We further show that HSNO can freely diffuse through membranes, facilitating transnitrosation of proteins such as hemoglobin. The data presented in this study explain some of the physiological effects ascribed to H2S, but, more broadly, introduce a new signaling molecule, HSNO, and suggest that it may play a key role in cellular redox regulation.
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影响因子:
20.1
作者:
Calvert JW;Jha S;Gundewar S;Elrod JW;Ramachandran A;Pattillo CB;Kevil CG;Lefer DJ
通讯作者:
Lefer DJ
影响因子:
3.9
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STAMLER, JS
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Stamler, JS
影响因子:
13.6
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Stamler JS
影响因子:
4.7
作者:
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通讯作者:
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