Local Maximum Absorption Method for Structure Fitting in CryoEM

机译：CryoEM中结构拟合的局部最大吸收方法

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Cryo-electron microscopy (CryoEM) is a very important method for studying the structures of macromolecules. Structure fitting is one of the key problems in CryoEM technique. We propose a novel structure fitting method for automatic alignment of the atomic model and CryoEM density map. Based on the domain knowledge, 3D density map is presented by local maximum points. And the atomic model is presented by atoms with high density value. According to characteristic of CryoEM density map, these atoms must correspond to one of the local maximum, then employ absolute orientation algorithm to calculate the rotation matrix and transfer vector. To show the efficiency of our method, we apply the algorithm on two pairs of test data.

机译：低温电子显微镜（CryoEM）是研究大分子结构的非常重要的方法。结构拟合是CryoEM技术的关键问题之一。我们提出了一种新颖的自动拟合原子模型和CryoEM密度图的结构拟合方法。基于领域知识，由局部最大点表示3D密度图。原子模型由具有高密度值的原子表示。根据CryoEM密度图的特性，这些原子必须对应于局部极大值之一，然后采用绝对取向算法来计算旋转矩阵和传递矢量。为了证明我们方法的有效性，我们将该算法应用于两对测试数据。

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来源
《Components, packaging and manufacturing technology》|2010年|p.77-82|共6页
会议地点 Sanya(CN);Sanya(CN)
作者
Guihua Shan; Jun Liu; Xuebin Chi;
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作者单位

Computer Network Information Center, Chinese Academy of Sciences Graduate University of Chinese Academy of Sciences;

Computer Network Information Center, Chinese Academy of Sciences;

Computer Network Information Center, Chinese Academy of Sciences;

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会议组织
原文格式 PDF
正文语种 eng
中图分类一般性问题;
关键词
CryoEM density map; atomic model; structure fitting; absolute orientation; image processing;

机译：CryoEM密度图；原子模型结构拟合；绝对方向图像处理;

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专利

1. Finding rigid bodies in protein structures: Application to flexible fitting into cryoEM maps [J] . Pandurangan Arun Prasad, Topf Maya Journal of Structural Biology . 2012,第2期

机译：在蛋白质结构中寻找刚体：在可适应cryoEM图的应用
2. Refinement of protein structures by iterative comparative modeling and cryoEM density fitting [J] . Topf M, Baker ML, Marti-Renom MA, Journal of Molecular Biology . 2006,第5期

机译：通过迭代比较建模和cryoEM密度拟合细化蛋白质结构
3. Structures of biomolecular complexes by combination of NMR and cryoEM methods [J] . Philippe Cuniasse, Paulo Tavares, Elena V Orlova, Current Opinion in Structural Biology . 2017,第期

机译：通过NMR和Cryoem方法组合的生物分子复合物的结构
4. Local Maximum Absorption Method for Structure Fitting in CryoEM [C] . Guihua Shan, Jun Liu, Xuebin Chi International Conference on Components, Packaging and Manufacturing Technology . 2011

机译：Cryoem结构配件的局部最大吸收方法
5. Analysis of riprap design methods using predictive equations for maximum and average velocities at the tips of transverse in-stream structures. [D] . Parker, Thomas Richard. 2014

机译：使用预测方程式分析溪流设计方法，以预测横向河床结构尖端的最大和平均速度。
6. Protein Structure Fitting and Refinement Guided by cryoEM Density [O] . Maya Topf, Keren Lasker, Ben Webb, -1

机译：以cryoEM密度为指导的蛋白质结构拟合和提纯
7. Structures of biomolecular complexes by combination of NMR and cryoEM\ud methods [O] . Cuniasse, P., Tavares, P., Orlova, Elena, 2017

机译：NMR和cryoEM结合的生物分子复合物结构方法

Local Maximum Absorption Method for Structure Fitting in CryoEM

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