An interdomain sector mediating allostery in Hsp70 molecular chaperones.
An interdomain sector mediating allostery in Hsp70 molecular chaperones.
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DOI:
10.1038/msb.2010.65
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发表时间:
2010-09-21
影响因子:
9.9
通讯作者:
中科院分区:
文献类型:
--
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Allosteric coupling between protein domains is fundamental to many cellular processes. For example, Hsp70 molecular chaperones use ATP binding by their actin-like N-terminal ATPase domain to control substrate interactions in their C-terminal substrate-binding domain, a reaction that is critical for protein folding in cells. Here, we generalize the statistical coupling analysis to simultaneously evaluate co-evolution between protein residues and functional divergence between sequences in protein sub-families. Applying this method in the Hsp70/110 protein family, we identify a sparse but structurally contiguous group of co-evolving residues called a ‘sector’, which is an attribute of the allosteric Hsp70 sub-family that links the functional sites of the two domains across a specific interdomain interface. Mutagenesis of Escherichia coli DnaK supports the conclusion that this interdomain sector underlies the allosteric coupling in this protein family. The identification of the Hsp70 sector provides a basis for further experiments to understand the mechanism of allostery and introduces the idea that cooperativity between interacting proteins or protein domains can be mediated by shared sectors.
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影响因子:
5.5
作者:
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通讯作者:
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影响因子:
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Zuiderweg, Erik R. P.
DOI:
10.1126/science.1159052
发表时间:
2008-10-17
期刊:
Science (New York, N.Y.)
影响因子:
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DOI:
10.1073/pnas.0409128102
发表时间:
2005-01-25
影响因子:
11.1
作者:
Estabrook, RA;Luo, J;Reich, NO
通讯作者:
Reich, NO
DOI:
10.1073/pnas.0903503106
发表时间:
2009-05-26
影响因子:
11.1
作者:
Bertelsen, Eric B.;Chang, Lyra;Zuiderweg, Erik R. P.
通讯作者:
Zuiderweg, Erik R. P.