Conformation dependence of backbone geometry in proteins.
Conformation dependence of backbone geometry in proteins.
复制标题
蛋白质中主链几何形状的构象依赖性。
DOI:
10.1016/j.str.2009.08.012
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发表时间:
2009-10-14
期刊:
影响因子:
--
通讯作者:
Karplus PA
中科院分区:
文献类型:
--
作者:
Berkholz DS;Shapovalov MV;Dunbrack RL Jr;Karplus PA
Protein structure determination and predictive modeling have long been guided by the paradigm that the peptide backbone has a single, context-independent ideal geometry. Both quantum-mechanics calculations and empirical analyses have shown this is an incorrect simplification in that backbone covalent geometry actually varies systematically as a function of the Φ and Ψ backbone dihedral angles. Here, we use a nonredundant set of ultrahigh-resolution protein structures to define these conformation-dependent variations. The trends have a rational, structural basis that can be explained by avoidance of atomic clashes or optimization of favorable electrostatic interactions. To facilitate adoption of this new paradigm, we have created a conformation-dependent library of covalent bond lengths and bond angles and shown that it has improved accuracy over existing methods without any additional variables to optimize. Protein structures derived both from crystallographic refinement and predictive modeling both stand to benefit from incorporation of the new paradigm.
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影响因子:
13.8
作者:
Baldwin, RL;Rose, GD
通讯作者:
Rose, GD
影响因子:
8
作者:
Ho, BK;Thomas, A;Brasseur, R
通讯作者:
Brasseur, R
DOI:
10.1107/s0907444904019158
发表时间:
2004-12-01
影响因子:
2.2
作者:
Emsley, P;Cowtan, K
通讯作者:
Cowtan, K
影响因子:
8
作者:
Karplus, PA
通讯作者:
Karplus, PA
影响因子:
2.9
作者:
HURLEY, JH;MASON, DA;MATTHEWS, BW
通讯作者:
MATTHEWS, BW