Symmetric key structural residues in symmetric proteins with beta-trefoil fold.
Symmetric key structural residues in symmetric proteins with beta-trefoil fold.
复制标题
具有 β-三叶形折叠的对称蛋白质中的对称关键结构残基
DOI:
10.1371/journal.pone.0014138
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发表时间:
2010-11-30
期刊:
影响因子:
3.7
通讯作者:
Xiao Y
中科院分区:
文献类型:
--
作者:
Feng J;Li M;Huang Y;Xiao Y
To understand how symmetric structures of many proteins are formed from asymmetric sequences, the proteins with two repeated beta-trefoil domains in Plant Cytotoxin B-chain family and all presently known beta-trefoil proteins are analyzed by structure-based multi-sequence alignments. The results show that all these proteins have similar key structural residues that are distributed symmetrically in their structures. These symmetric key structural residues are further analyzed in terms of inter-residues interaction numbers and B-factors. It is found that they can be distinguished from other residues and have significant propensities for structural framework. This indicates that these key structural residues may conduct the formation of symmetric structures although the sequences are asymmetric.
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