蛋白质柔性在光合作用光收集中的非同寻常的功能作用:利用中子散射研究蛋白质动力学

IF 2.4 4区 材料科学 Q2 CRYSTALLOGRAPHY Crystals Pub Date : 2024-08-21 DOI:10.3390/cryst14080743
Maksym Golub, Jörg Pieper
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引用次数: 0

摘要

除了蛋白质三维结构的研究之外,蛋白质动态特性的信息对于了解蛋白质的一般功能也是不可或缺的。当分子流动性和功能在特定温度或水合条件下同时受到影响时,蛋白质动力学和功能之间的相关性就会显现出来。相比之下,主要光合作用光收集复合体 II(LHC II)内部的激发能量转移则是一个非典型案例,因为它即使在低温条件下也能完全正常工作,这主要取决于电子状态之间的相互作用,而且只涉及谐波蛋白质振动。这篇综述总结了最近有关 LHC II 的振动和构象蛋白质动力学的研究,并将这些发现与其光收集功能直接联系起来。此外,我们还全面介绍了如何利用中子光谱学和分子动力学模拟来研究溶液中光合作用蛋白质复合物的蛋白质动力学,这是对蛋白质晶体学研究的补充。
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The Unusual Functional Role of Protein Flexibility in Photosynthetic Light Harvesting: Protein Dynamics Studied Using Neutron Scattering
In addition to investigations of the three-dimensional protein structure, information on the dynamical properties of proteins is indispensable for an understanding of protein function in general. Correlations between protein dynamics and function are typically anticipated when both molecular mobility and function are concurrently affected under specific temperatures or hydration conditions. In contrast, excitation energy transfer within the major photosynthetic light-harvesting complex II (LHC II) presents an atypical case, as it remains fully operational even at cryogenic temperatures, primarily depending on the interactions between electronic states and involving harmonic protein vibrations only. This review summarizes recent work on vibrational and conformational protein dynamics of LHC II and directly relates these findings to its light-harvesting function. In addition, we give a comprehensive introduction into the use of neutron spectroscopy and molecular dynamics simulations to investigate the protein dynamics of photosynthetic protein complexes in solution, which is information complementary to that obtained by protein crystallography.
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来源期刊
Crystals
Crystals CRYSTALLOGRAPHYMATERIALS SCIENCE, MULTIDIS-MATERIALS SCIENCE, MULTIDISCIPLINARY
CiteScore
4.20
自引率
11.10%
发文量
1527
审稿时长
16.12 days
期刊介绍: Crystals (ISSN 2073-4352) is an open access journal that covers all aspects of crystalline material research. Crystals can act as a reference, and as a publication resource, to the community. It publishes reviews, regular research articles, and short communications. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. Therefore, there is no restriction on article length. Full experimental details must be provided to enable the results to be reproduced. Crystals provides a  forum for the advancement of our understanding of the nucleation, growth, processing, and characterization of crystalline materials. Their mechanical, chemical, electronic, magnetic, and optical properties, and their diverse applications, are all considered to be of importance.
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