Tracking the structural dynamics of proteins in solution using time-resolved wide-angle X-ray scattering.

Tracking the structural dynamics of proteins in solution using time-resolved wide-angle X-ray scattering.
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DOI:
10.1038/nmeth.1255
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发表时间:
2008-10
期刊:
影响因子:
48
通讯作者:
Ihee, Hyotcherl
Ihee, Hyotcherl
中科院分区:
生物学1区
文献类型:
--
作者:
Cammarata, Marco;Levantino, Matteo;Schotte, Friedrich;Anfinrud, Philip A.;Ewald, Friederike;Choi, Jungkweon;Cupane, Antonio;Wulff, Michael;Ihee, Hyotcherl

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我们展示了利用具有纳秒时间分辨率的时间分辨广角 X 射线散射 (TR-WAXS) 跟踪蛋白质结构变化。我们研究了激光诱导配体光解引发的近生理条件下人血红蛋白的三级和四级构象变化。我们还报告了光诱导肌红蛋白三级弛豫和细胞色素 c 重折叠的数据,以说明该技术的广泛适用性。通过深入了解在自然环境中发挥功能的蛋白质的结构动力学,TR-WAXS 补充并扩展了时间分辨光谱学和 X 射线晶体学获得的结果。
We demonstrate tracking of protein structural changes with time-resolved wide-angle X-ray scattering (TR-WAXS) with nanosecond time resolution. We investigated the tertiary and quaternary conformational changes of human hemoglobin under nearly physiological conditions triggered by laser-induced ligand photolysis. We also report data on optically induced tertiary relaxations of myoglobin and refolding of cytochrome c to illustrate the wide applicability of the technique. By providing insights into the structural dynamics of proteins functioning in their natural environment, TR-WAXS complements and extends results obtained with time-resolved optical spectroscopy and X-ray crystallography.
DOI: 10.1016/0022-2836(84)90472-8
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