...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Applied Magnetic Resonance >EPR Characterization of Mononuclear Dinitrosyl Iron Complex with Persulfide as a New Representative of Dinitrosyl Iron Complexes in Biological Systems: an Overview
【24h】

EPR Characterization of Mononuclear Dinitrosyl Iron Complex with Persulfide as a New Representative of Dinitrosyl Iron Complexes in Biological Systems: an Overview

机译：单核二亚硝基铁络合物的EPR表征与过硫化物作为生物系统中二亚硝基铁络合物的新代表：概述

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Some recent data on the presence of mononuclear dinitrosyl iron complexes (M-DNIC) with persulfide (R-S-S~-) ligands with a characteristic electron paramagnetic resonance signal at g_⊥ = 2.35 and g|| = 2.02 (g_(aver). = 2.03) in biological systems (e.g., Escherichia coli cells and isolated iron-sulfur proteins) are reviewed. The generation of M-DNIC is controlled by inorganic sulfur (sulfide, S~(2-)) whose binding to thiols gives persulfides. It is suggested that enhanced production of inorganic sulfur is a result of destruction of active centers of iron-sulfur proteins in the presence of NO or NO-containing compounds. Dinitrosyl iron complexes with thiol-containing ligands are the most active participants in this process. Inorganic sulfur may appear in biological systems during the synthesis or resynthesis of active centers of iron-sulfur proteins in response to activation of cysteine desulfurase, the key enzyme in sulfide synthesis from cysteine.
机译：关于具有过硫化物（R-S-S〜-）配体的单核二亚硝基铁络合物（M-DNIC）的特征性电子顺磁共振信号在g_⊥= 2.​​35和g ||时的一些最新数据。综述了生物系统（例如，大肠杆菌细胞和分离的铁硫蛋白）＝ 2.02（g_（平均值）＝ 2.03）。 M-DNIC的生成受无机硫（硫化物，S〜（2-））控制，其与硫醇的结合生成过硫化物。建议在存在NO或含NO的化合物存在时破坏铁硫蛋白活性中心的结果是提高了无机硫的产生。具有亚硫醇基的配体的二亚硝基铁络合物是该过程中最活跃的参与者。响应半胱氨酸脱硫酶（半胱氨酸合成硫化物的关键酶）的活化，铁硫蛋白活性中心的合成或再合成过程中，无机硫可能会出现在生物系统中。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号