首页> 外文会议>Pacific Symposium on Biocomputing '98 4-9 January 1998 Maui, Hawaii, USA >Modeling and superposition of multiple protein structures using affine transformations: analysis of the globins
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Modeling and superposition of multiple protein structures using affine transformations: analysis of the globins

机译:使用仿射变换对多种蛋白质结构进行建模和叠加:珠蛋白的分析

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摘要

A novel approach for analyzing multiple protein structures is presented. A family of related protein structures may be characterized by an affine model, obtained by applying tranformation matrices that permit both rotation and shear. The afine model and transformation matrices can be computed efficiently using a signle eigendecomposition. A novel method for finding corredpondences is also introduced. This method matches dcurvatures along the protein backbone. The algorithm is applied to analyze a set of seven glboin structures. Our method identifies 100 corresponding landmarks across all seven structures. Results show that most helices in globins can be identified by high curvature, with the exception of the C and D helices. Analysis of the superposition reveals that globins are most strongly conserved structurally in the mid-regions of the E and G helices.
机译:提出了一种分析多种蛋白质结构的新颖方法。相关蛋白结构家族可以通过仿射模型来表征,该仿射模型是通过应用允许旋转和剪切的变换矩阵获得的。精细模型和变换矩阵可以使用符号特征分解有效地计算。还介绍了一种寻找对应关系的新方法。该方法匹配沿蛋白质骨架的弯曲。该算法用于分析一组七个球蛋白结构。我们的方法在所有七个结构中识别出100个对应的地标。结果表明,除了C和D螺旋外,珠蛋白中的大多数螺旋都可以通过高曲率识别。叠加分析表明,球蛋白在E和G螺旋的中部区域结构最保守。

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