Abstract Conformer Space

IF 1.8 4区 化学 Q3 CHEMISTRY, MULTIDISCIPLINARY
Gunnar Jeschke
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引用次数: 0

Abstract

Pairwise distance root mean square deviation defines a hyperspace where conformers with similar shape reside close to each other. The radius of gyration of protein ensembles in this abstract conformer space (ACS) converges at ensemble sizes between 50 and 500, depending on the extent of disorder. Upon further increase of ensemble size, the root mean square distance of conformers to their nearest neighbors decreases only slowly. Clustering in ACS can reveal distinct subensembles. For proteins that exist in two states, clustering in a common ACS reveals differences between the ensembles in the two states. The dimension of ACS can be reduced to 2D or 3D by multi-dimensional scaling or principal component analysis. Visualization in these lower-dimensional spaces also reveals differences between protein states or the existence of subensembles. The ratio between the gyration radius in ACS and its counterpart in real space is a global disorder parameter.

Abstract Image

抽象共形空间
两两距离均方根偏差定义了形状相似的构象彼此靠近的超空间。在这个抽象的共形空间(ACS)中,蛋白质集合的旋转半径收敛于集合大小在50到500之间,这取决于无序程度。当整体尺寸进一步增大时,同形体到其最近邻居的均方根距离仅缓慢减小。ACS的聚类可以揭示不同的亚系。对于存在于两种状态的蛋白质,聚类在一个共同的ACS中揭示了两种状态下的集合之间的差异。通过多维标度或主成分分析,可以将ACS的维数降至二维或三维。这些低维空间的可视化也揭示了蛋白质状态之间的差异或亚集合的存在。ACS中旋转半径与实际空间中对应的旋转半径之比是一个全局失序参数。
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来源期刊
Helvetica Chimica Acta
Helvetica Chimica Acta 化学-化学综合
CiteScore
3.00
自引率
0.00%
发文量
60
审稿时长
2.3 months
期刊介绍: Helvetica Chimica Acta, founded by the Swiss Chemical Society in 1917, is a monthly multidisciplinary journal dedicated to the dissemination of knowledge in all disciplines of chemistry (organic, inorganic, physical, technical, theoretical and analytical chemistry) as well as research at the interface with other sciences, where molecular aspects are key to the findings. Helvetica Chimica Acta is committed to the publication of original, high quality papers at the frontier of scientific research. All contributions will be peer reviewed with the highest possible standards and published within 3 months of receipt, with no restriction on the length of the papers and in full color.
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