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arXiv 0810.1327q-bio.BM
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蛋白质配体结合基序的综合结构分类

Comprehensive structural classification of ligand binding motifs in proteins

Akira R. Kinjo, Haruki Nakamura

摘要:

对蛋白质与配体相互作用的全面了解将为蛋白质功能的注释、蛋白质进化的研究、酶活性的工程化以及药物的设计提供有用的基础。为了研究蛋白质结构中配体结合位点的多样性和普遍性,我们利用最近开发的数据库搜索和比对算法,对蛋白质数据库中所有已知结构中发现的18万多个配体结合位点进行了全对全的原子水平结构比较。通过应用混合自上而下-自下而上的聚类分析的比较结果,我们确定了约3000个明确的配体结合位点的结构基序。除了少数例外,大多数结构基序被发现局限于单一的家庭或超家庭,并与特定的配体。此外,我们分析了相似性网络的组成部分,并列举了超过4000对配体结合位点,在不同的蛋白质折叠共享。

英文摘要:

Comprehensive knowledge of protein-ligand interactions should provide a useful basis for annotating protein functions, studying protein evolution, engineering enzymatic activity, and designing drugs. To investigate the diversity and universality of ligand binding sites in protein structures, we conducted the all-against-all atomic-level structural comparison of over 180,000 ligand binding sites found in all the known structures in the Protein Data Bank by using a recently developed database search and alignment algorithm. By applying a hybrid top-down-bottom-up clustering analysis to the comparison results, we determined approximately 3000 well-defined structural motifs of ligand binding sites. Apart from a handful of exceptions, most structural motifs were found to be confined within single families or superfamilies, and to be associated with particular ligands. Furthermore, we analyzed the components of the similarity network and enumerated more than 4000 pairs of ligand binding sites that were shared across different protein folds.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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