Single Biomolecules at Cryogenic Temperatures: From Structure to Dynamics

Single Biomolecules at Cryogenic Temperatures: From Structure to Dynamics
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低温下的单个生物分子:从结构到动力学

DOI:
10.1007/978-3-540-73924-1_2
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发表时间:
2008
影响因子:
4.9
通讯作者:
M. Orrit
M. Orrit
中科院分区:
医学2区
文献类型:
--
作者:
C. Hofmann;F. Kulzer;R. Zondervan;J. Köhler;M. Orrit

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阐明蛋白质的动力学仍然是分子生物学的核心和艰巨的挑战。在我们的贡献中,我们讨论了低温观测的相关性,不仅与结构有关,而且与动力学有关,从而与蛋白质的功能有关。我们首先回顾了对光收集复合物的研究,以说明如何在低温下增加光稳定性和光谱选择,从而更深入地了解发色团的激子相互作用和蛋白质支架的动力学。此外,我们介绍了一种新的技术,可以在微秒时间尺度上实现微观样品的可控、可重复的温度循环。我们讨论了该技术作为实现可重复的单分子冷冻捕获的工具的潜力,并克服了室温下单分子实验的一些局限性。
Elucidating the dynamics of proteins remains a central and daunting challenge of molecular biology. In our contribution we discuss the relevance of low- temperature observations not only to structure, but also to dynamics, and thereby to the function of proteins. We first review investigations on light-harvesting complexes to illustrate how increased photostability at low temperatures and spectral selection provide a deeper insight into the excitonic interactions of the chromophores and the dynamics of the protein scaffold. Furthermore, we introduce a novel technique that achieves controlled, reproducible temperature cycles of a microscopic sample on microsecond timescales. We discuss the potential of this technique as a tool to achieve repeatable single-molecule freeze-trapping and to overcome some of the limitations of single-molecule experiments at room temperature.
DOI: 10.1073/pnas.96.3.893
发表时间: 1999-02-02
影响因子: 11.1
作者:
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发表时间: 2000-05-09
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DOI: 10.1016/s0969-2126(96)00063-9
发表时间: 1996-05-15
期刊: STRUCTURE
影响因子: 5.7
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