Determination of functional collective motions in a protein at atomic resolution using coherent neutron scattering.

Determination of functional collective motions in a protein at atomic resolution using coherent neutron scattering.
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使用相干中子散射以原子分辨率测定蛋白质的功能集体运动

DOI:
10.1126/sciadv.1600886
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发表时间:
2016-10
期刊:
影响因子:
13.6
通讯作者:
Smith JC
Smith JC
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Hong L;Jain N;Cheng X;Bernal A;Tyagi M;Smith JC

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相干中子散射决定了蛋白质功能集体模式的形式、时间尺度和振幅。蛋白质的功能通常取决于整体的、集体的内部运动。然而,这些运动的形式,振幅和时间尺度的同时定量实验测定仍然是难以捉摸的。我们证明,这些大尺度的动态模式的完整描述,可以得到使用相干中子散射实验的全氘样品。通过这种方法,建立了蛋白质细胞色素P450cam的结构、动力学和功能之间的微观关系。这里开发的方法应该是普遍适用于蛋白质系统。
Coherent neutron scattering determines the forms, time scales, and amplitudes of protein functional collective modes. Protein function often depends on global, collective internal motions. However, the simultaneous quantitative experimental determination of the forms, amplitudes, and time scales of these motions has remained elusive. We demonstrate that a complete description of these large-scale dynamic modes can be obtained using coherent neutron-scattering experiments on perdeuterated samples. With this approach, a microscopic relationship between the structure, dynamics, and function in a protein, cytochrome P450cam, is established. The approach developed here should be of general applicability to protein systems.
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