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Accuracy of free-energy perturbation calculations in molecular simulation. I. Modeling

  • SUNY Buffalo

Research output: Contribution to journalArticlepeer-review

142 Scopus citations

Abstract

Free energy perturbation (FEP) calculations in molecular simulation were analyzed for their accuracy. Poor sampling of energy distribution wings was noticed as the main cause of error of FEP calculations. Results showed that insertion calculation were more reliable free-energy estimations than deletion calculations. A fast decrease in the error of the insertion calculation with increase of simulation length was found as compared to the deletion calculations.

Original languageEnglish
Pages (from-to)7303-7311
Number of pages9
JournalJournal of Chemical Physics
Volume114
Issue number17
DOIs
StatePublished - May 1 2001

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