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根据高分辨率X射线晶体学或核磁共振数据构建流体动力学珠子模型。

Construction of hydrodynamic bead models from high-resolution X-ray crystallographic or nuclear magnetic resonance data.

作者信息

Byron O

机构信息

Department of Biochemistry, University of Leicester, United Kingdom.

出版信息

Biophys J. 1997 Jan;72(1):408-15. doi: 10.1016/S0006-3495(97)78681-8.

Abstract

Computer software such as HYDRO, based upon a comprehensive body of theoretical work, permits the hydrodynamic modeling of macromolecules in solution, which are represented to the computer interface as an assembly of spheres. The uniqueness of any satisfactory resultant model is optimized by incorporating into the modeling procedure the maximal possible number of criteria to which the bead model must conform. An algorithm (AtoB, for atoms to beads) that permits the direct construction of bead models from high resolution x-ray crystallographic or nuclear magnetic resonance data has now been formulated and tested. Models so generated then act as informed starting estimates for the subsequent iterative modeling procedure, thereby hastening the convergence to reasonable representations of solution conformation. Successful application of this algorithm to several proteins shows that predictions of hydrodynamic parameters, including those concerning solvation, can be confirmed.

摘要

诸如HYDRO之类的计算机软件,基于大量的理论工作,能够对溶液中的大分子进行流体动力学建模,这些大分子在计算机界面上被表示为球体的集合。通过将珠子模型必须符合的尽可能多的标准纳入建模过程,可优化任何令人满意的最终模型的独特性。现在已经制定并测试了一种算法(从原子到珠子的AtoB算法),该算法允许根据高分辨率X射线晶体学或核磁共振数据直接构建珠子模型。如此生成的模型随后作为后续迭代建模过程的明智初始估计,从而加速收敛到溶液构象的合理表示。该算法在几种蛋白质上的成功应用表明,包括那些与溶剂化有关的流体动力学参数的预测可以得到证实。

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