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Resolution of identity density functional theory augmented with an empirical dispersion term (RI-DFT-D): a promising tool for studying isolated small peptides
Černý J., Jurečka P., Hobza P., Valdés H.
Jazyk angličtina Země Spojené státy americké
NLK
ProQuest Central
od 1997-01-01 do Před 1 rokem
Health & Medicine (ProQuest)
od 1997-01-01 do Před 1 rokem
- MeSH
- chemické modely MeSH
- dipeptidy chemie izolace a purifikace MeSH
- financování organizované MeSH
- kvantová teorie MeSH
- oligopeptidy chemie izolace a purifikace MeSH
- senzitivita a specificita MeSH
- spektrofotometrie infračervená metody MeSH
- termodynamika MeSH
Resolution of identity standard density functional theory augmented with a damped empirical dispersion term (RI-DFT-D) calculations have been carried out on a set of lowest energy minima of tryptophyl-glycine (Trp-Gly) and tryptophyl-glycyl-glycine (Trp-Gly-Gly) peptides. RI-DFT-D (TPSS/TZVP) results are in excellent agreement with benchmark data based on the CCSD(T) method. Experimental spectra could be assigned according to the calculated IR frequencies. Central processing unit (CPU) time requirements are only slightly higher than those needed for the DFT calculations. Consequently, RI-DFT-D theory seems to be a promising methodology for studying oligopeptides with accuracy comparable to ab initio quantum chemical calculations.
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- $a Resolution of identity density functional theory augmented with an empirical dispersion term (RI-DFT-D): a promising tool for studying isolated small peptides / $c Černý J., Jurečka P., Hobza P., Valdés H.
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- $a Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic and Center for Biomolecules and Complex Molecular Systems, 166 10 Prague 6, Czech Republic
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- $a Resolution of identity standard density functional theory augmented with a damped empirical dispersion term (RI-DFT-D) calculations have been carried out on a set of lowest energy minima of tryptophyl-glycine (Trp-Gly) and tryptophyl-glycyl-glycine (Trp-Gly-Gly) peptides. RI-DFT-D (TPSS/TZVP) results are in excellent agreement with benchmark data based on the CCSD(T) method. Experimental spectra could be assigned according to the calculated IR frequencies. Central processing unit (CPU) time requirements are only slightly higher than those needed for the DFT calculations. Consequently, RI-DFT-D theory seems to be a promising methodology for studying oligopeptides with accuracy comparable to ab initio quantum chemical calculations.
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