A potential function for conformational analysis of proteins.
A potential function for conformational analysis of proteins.
复制标题
蛋白质构象分析的潜在功能。
DOI:
10.1111/j.1399-3011.1984.tb00955.x
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发表时间:
1984
期刊:
影响因子:
--
通讯作者:
Viswanadhan,VN
中科院分区:
文献类型:
--
作者:
Crippen,GM;Viswanadhan,VN
We have devised a residue‐residue potential function for low resolution protein conformational calculations. The interactions between residues near in sequence maintain correct secondary structure, while the long‐range terms in the potential govern the larger packing features and overall globularity. The short‐range terms were calculated by comparing the observed distributions of distances between Cαatoms in 35 protein crystal structures to the expected distributions and assigning the discrepancies to a Boltzmann distribution due to an effective potential. Long‐range terms were adjusted to ensure that the crystal structure of bovine pancreatic trypsin inhibitor has a lower total energy than perturbed conformations of the same molecule. Thus the empirical potential function implicity contains solvation and conformational entropy effects along with the usual Van der Waals and electrostatic energies. Extensive testing of the potential on trypsin inhibitor and other proteins establishes that it is generally applicable to small proteins, it does not attempt to compress or expand the conformations found by X‐ray crystallography, standard secondary structural features are maintained under the potential, and there are so many local minima that local minimization can be trusted to return a perturbed structure to the native conformation only if they differ initially by less then 1 Ad̀.
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影响因子:
3
作者:
G. Crippen
通讯作者:
G. Crippen
影响因子:
2.9
作者:
J. McCammon;S. Northrup;M. Karplus;R. Levy
通讯作者:
R. Levy
DOI:
10.1021/j150609a022
发表时间:
1981
期刊:
The Journal of Physical Chemistry
影响因子:
--
作者:
M. Oobatake;G. Crippen
通讯作者:
G. Crippen
影响因子:
2.9
作者:
G. Crippen
通讯作者:
G. Crippen
DOI:
10.1021/j100531a013
发表时间:
1977
期刊:
The Journal of Physical Chemistry
影响因子:
--
作者:
M. Pincus;H. Scheraga
通讯作者:
H. Scheraga