The reaction of oxyhemoglobin with nitric oxide: EPR evidence for an iron(III)-nitrate intermediate
The reaction of oxyhemoglobin with nitric oxide: EPR evidence for an iron(III)-nitrate intermediate
复制标题
氧合血红蛋白与一氧化氮的反应:硝酸铁 (III) 中间体的 EPR 证据
DOI:
10.1016/j.ica.2015.07.037
复制
发表时间:
2015
影响因子:
2.8
通讯作者:
Silaghi-Dumitrescu R
中科院分区:
文献类型:
--
作者:
Silaghi-Dumitrescu R
The reaction of oxyhemoglobin with nitric oxide is known to occurin vivo, with direct medical and pathophysiological relevance. The mechanism has been proposed to involve a transient iron(III)-peroxynitrite intermediate, the formation of which would be rate-limiting and the decay of which would yield iron(III)-aqua/iron(III)-hydroxo hemoglobin. Reported here are rapid-freeze-quench EPR (RFQ-EPR) spectroscopy data on the reaction of oxyhemoglobin with nitric oxide; no direct evidence is seen for an iron(III)-peroxynitrite intermediate. These findings are consistent with theoretical considerations according to which such an intermediate does form but is too short-lived to be detectable. Instead, iron(III) low-spin and high-spin transient species are detected in the RFQ-EPR experiments, which can be explained as arising from interactions of nitrate with methemoglobin.
登录
查看更多内容
影响因子:
3.9
作者:
Radu Silaghi;I. Silaghi
通讯作者:
I. Silaghi
影响因子:
4.1
作者:
D. Svistunenko;M. Sharpe;P. Nicholls;C. Blenkinsop;N. Davies;J. Dunne;M. Wilson;C. Cooper
通讯作者:
C. Cooper
影响因子:
2.9
作者:
Eich, RF;Li, TS;Olson, JS
通讯作者:
Olson, JS
影响因子:
15
作者:
A. Nemes;Oleg Pestovsky;A. Bakac
通讯作者:
A. Bakac
影响因子:
15
作者:
Herold, S;Matsui, T;Watanabe, Y
通讯作者:
Watanabe, Y