Modulation of electron transfer kinetics by protein conformational fluctuations during early-stage photosynthesis

Srabanti Chaudhury; Binny J. Cherayil

首页> 外文期刊>The Journal of Chemical Physics >Modulation of electron transfer kinetics by protein conformational fluctuations during early-stage photosynthesis

【24h】

Modulation of electron transfer kinetics by protein conformational fluctuations during early-stage photosynthesis

机译：早期光合作用中蛋白质构象波动对电子转移动力学的调节

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相似文献
相关主题

摘要

The kinetics of electron transfer during the early stages of the photosynthetic reaction cycle has recently been shown in transient absorption experiments carried out by Wang et al. [Science 316, 747 (2007)] to be strongly influenced by fluctuations in the conformation of the surrounding protein. A model of electron transfer rates in polar solvents developed by Sumi and Marcus using a reaction-diffusion formalism [J. Chem. Phys. 84, 4894 (1986)] was found to be successful in fitting the experimental absorption curves over a roughly 200 ps time interval. The fits were achieved using an empirically determined time-dependent function that described protein conformational relaxation. In the present paper, a microscopic model of this function is suggested, and it is shown that the function can be identified with the dynamic autocorrelation function of intersegment distance fluctuations that occur in a harmonic potential of mean force under the action of fractional Gaussian noise.

机译：Wang等人进行的瞬态吸收实验最近显示了光合作用循环早期阶段电子转移的动力学。 [Science 316，747（2007）]受周围蛋白质构象波动的强烈影响。 Sumi和Marcus利用反应扩散形式学建立了极性溶剂中电子转移速率的模型[J.化学物理84，4894（1986）]发现在大约200 ps的时间间隔内成功拟合了实验吸收曲线。使用描述蛋白质构象松弛的经验确定的时间依赖性函数来实现拟合。在本文中，提出了该函数的微观模型，并且表明该函数可以通过段间距离波动的动态自相关函数来识别，该段间距离波动是在分数高斯噪声的作用下，平均力的谐波势中发生的。

著录项

来源
《The Journal of Chemical Physics》 |2007年第14期|共7页
作者
Srabanti Chaudhury; Binny J. Cherayil;
展开▼
作者单位

展开▼
收录信息
原文格式 PDF
正文语种 eng
中图分类
关键词

相似文献

外文文献
中文文献
专利

1. Modulation of electron transfer kinetics by protein conformational fluctuations during early-stage photosynthesis [J] . Srabanti Chaudhury, Binny J. Cherayil The Journal of Chemical Physics . 2007,第14期

机译：早期光合作用中蛋白质构象波动对电子转移动力学的调节
2. Electron-transfer studies involving flavodoxin and a natural redox partner, the iron protein of nitrogenase. Conformational constraints on protein-protein interactions and the kinetics of electron transfer within the protein complex [J] . J Deistung, R N Thorneley The biochemical journal . 1988,第2期

机译：电子转移研究涉及黄酮毒素和天然氧化还原伴侣（固氮酶的铁蛋白）。蛋白质-蛋白质相互作用和蛋白质复合体内电子转移动力学的构象约束
3. A kinetic model linking protein conformational motions, interflavin electron transfer and electron flux through a dual-flavin enzyme - simulating the reductase activity of the endothelial and neuronal nitric oxide synthase flavoprotein domains [J] . Haque Mohammad M., Kenney Claire, Tejero Jesus, The FEBS journal . 2011,第21期

机译：通过双黄素酶连接蛋白质构象运动，黄素间电子转移和电子通量的动力学模型-模拟内皮和神经元一氧化氮合酶黄素蛋白结构域的还原酶活性
4. Flavin radicals,conformational sampling and robust design principles in interprotein electron transfer:the trimethylamine dehydrogenase-electron-transferring flavoprotein complex [C] . David Leys, Jaswir Basran, FrancoisTalfournier, Biochemical Society Symposium . 2004

机译：译文电子转移中的黄素自由基，构象取样和鲁棒设计原理：三甲胺脱氢酶 - 电子转移黄霉素复合物
5. Conformational dependence of electron transfer through molecular media: Hydrocarbons, proteins, and interfacial solvent. [D] . Lin, Jianping. 2005

机译：电子通过分子介质的构象依赖性：碳氢化合物，蛋白质和界面溶剂。
6. Electron-transfer studies involving flavodoxin and a natural redox partner the iron protein of nitrogenase. Conformational constraints on protein-protein interactions and the kinetics of electron transfer within the protein complex. [O] . R N Thorneley, J Deistung 1988

机译：电子转移研究涉及黄酮毒素和天然氧化还原伴侣（固氮酶的铁蛋白）。蛋白质-蛋白质相互作用和蛋白质复合体内电子转移动力学的构象约束。
7. Electron-transfer studies involving flavodoxin and a natural redox partner, the iron protein of nitrogenase. Conformational constraints on protein-protein interactions and the kinetics of electron transfer within the protein complex. [O] . Thorneley, R N, Deistung, J 1988

机译：电子转移研究涉及黄酮毒素和天然氧化还原伴侣（固氮酶的铁蛋白）。蛋白质-蛋白质相互作用和蛋白质复合体内电子转移动力学的构象约束。

Modulation of electron transfer kinetics by protein conformational fluctuations during early-stage photosynthesis

摘要

著录项

相似文献

相关主题

期刊订阅