Ab initio prediction of helical segments in polypeptides

Journal of Computational Chemistry
J L Klepeis, C A Floudas

Abstract

An ab initio method has been developed to predict helix formation for polypeptides. The approach relies on the systematic analysis of overlapping oligopeptides to determine the helical propensity for individual residues. Detailed atomistic level modeling, including entropic contributions, and solvation/ionization energies calculated through the solution of the Poisson-Boltzmann equation, is utilized. The calculation of probabilities for helix formation is based on the generation of ensembles of low energy conformers. The approach, which is easily amenable to parallelization, is shown to perform very well for several benchmark polypeptide systems, including the bovine pancreatic trypsin inhibitor, the immunoglobulin binding domain of protein G, the chymotrypsin inhibitor 2, the R69 N-terminal domain of phage 434 repressor, and the wheat germ agglutinin.

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Citations

Apr 17, 2012·Journal of Medicinal Chemistry·Meghan L Bellows-PetersonTrent M Woodruff
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Feb 4, 2010·Journal of Computational Chemistry·Lin ZhuHong-Bin Shen
Dec 24, 2002·Journal of Computational Chemistry·J L Klepeis, C A Floudas

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