Detecting and understanding the roles of nitric oxide in biology.

Detecting and understanding the roles of nitric oxide in biology.
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DOI:
10.1021/ic9022757
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发表时间:
2010-07-19
影响因子:
4.6
通讯作者:
Lippard, Stephen J.
Lippard, Stephen J.
中科院分区:
化学2区
文献类型:
--
作者:
Tonzetich, Zachary J.;McQuade, Lindsey E.;Lippard, Stephen J.

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我们正在采取双重策略来研究一氧化氮作为生物信号传导剂的化学作用。在一种方法中,评估用于检测活细胞中的NO的基于金属的荧光传感器,并且基于铜荧光素络合物的传感器已被证明是有价值的铅化合物。这类传感器允许识别NO从诱导型和组成型的一氧化氮合酶的形式,并促进调查不同的NO功能,响应于外部刺激。在另一种方法中,我们采用合成的铁-硫簇模型复合物来探测它们对一氧化氮的反应性,作为铁-硫蛋白活性位点的仿生。我们的研究表明,NO分解Fe-S团簇形成二亚硝酰铁络合物(DNIC)。
We are pursuing a dual strategy for investigating the chemistry of nitric oxide as a biological signaling agent. In one approach, metal-based fluorescent sensors for the detection of NO in living cells are evaluated, and a sensor based on a copper fluorescein complex has proved to be a valuable lead compound. Sensors of this class permit identification of NO from both inducible and constitutive forms of nitric oxide synthase and facilitate investigation of different NO functions in response to external stimuli. In the other approach, we employ synthetic model complexes of iron-sulfur clusters to probe their reactivity toward nitric oxide as biomimics of the active sites of iron-sulfur proteins. Our studies reveal that NO disassembles the Fe-S clusters to form dinitrosyl iron complexes (DNICs).
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发表时间: 1996-01-26
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