Prediction of protein tertiary structure to low resolution: performance for a large and structurally diverse test set - PubMed

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• PMID: 10329175
• DOI: 10.1006/jmbi.1999.2702

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Prediction of protein tertiary structure to low resolution: performance for a large and structurally diverse test set

V A Eyrich et al. J Mol Biol. 1999.

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Abstract

We report the tertiary structure predictions for 95 proteins ranging in size from 17 to 160 residues starting from known secondary structure. Predictions are obtained from global minimization of an empirical potential function followed by the application of a refined atomic overlap potential. The minimization strategy employed represents a variant of the Monte Carlo plus minimization scheme of Li and Scheraga applied to a reduced model of the protein chain. For all of the cases except beta-proteins larger than 75 residues, a native-like structure, usually 4-6 A root-mean-square deviation from the native, is located. For beta-proteins larger than 75 residues, the energy gap between native-like structures and the lowest energy structures produced in the simulation is large, so that low RMSD structures are not generated starting from an unfolded state. This is attributed to the lack of an explicit hydrogen bond term in the potential function, which we hypothesize is necessary to stabilize large assemblies of beta-strands.

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