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Assembly of protein tertiary structures from fragments with similar local sequences using simulated annealing and Bayesian scoring functions (1997)
| Venue: | J. MOL. BIOL |
| Citations: | 393 - 70 self |
BibTeX
@ARTICLE{Simons97assemblyof,
author = {Kim T. Simons and Charles Kooperberg and Enoch Huang and David Baker},
title = {Assembly of protein tertiary structures from fragments with similar local sequences using simulated annealing and Bayesian scoring functions},
journal = {J. MOL. BIOL},
year = {1997},
pages = {209--225}
}
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Abstract
We explore the ability of a simple simulated annealing procedure to assemble native-like structures from fragments of unrelated protein structures with similar local sequences using Bayesian scoring functions. Environment and residue pair specific contributions to the scoring functions appear as the first two terms in a series expansion for the residue probability distributions in the protein database; the decoupling of the distance and environment dependencies of the distributions resolves the major problems with current database-derived scoring functions noted by Thomas and Dill. The simulated annealing procedure rapidly and frequently generates native-like structures for small helical proteins and better than random structures for small b sheet containing proteins. Most of the simulated structures have native-like solvent accessibility and secondary structure patterns, and thus ensembles of these structures provide a particularly challenging set of decoys for evaluating scoring functions. We investigate the effects of multiple sequence information and different types of conformational constraints on the overall performance of the method, and the ability of a variety of recently developed scoring functions to recognize the native-like conformations in the ensembles of simulated structures.
Keyphrases
similar local sequence bayesian scoring function simulated annealing protein tertiary structure simulated structure small sheet native-like conformation small helical protein random structure protein database unrelated protein major problem series expansion current database-derived scoring function residue pair specific contribution multiple sequence information environment dependency assemble native-like structure native-like structure overall performance challenging set different type conformational constraint secondary structure pattern native-like solvent accessibility simulated annealing procedure residue probability distribution
