Abstract

We have carried out high level gas phase quantum chemical calculations of the relative energetics of the alanine tetrapeptide, using the SP2 obtained as part of the CUCBS facility. These calculations allow for the first time an evaluation of the performance of a wide variety of molecular mechanics force fields for peptides as compared to accurate quantum chemistry. Future work will involve examination of a wide range of different amino acids and peptide structural motifs, as well as extention of the approach to solution phase comparisons.

  Funding Agency

Agency
National Institute of Health (NIH)
Institute
National Center for Research Resources (NCRR)
Type
Biotechnology Resource Grants (P41)
Project #
2P41RR006892-06
Application #
5225540
Study Section
Project Start
Project End
Budget Start
Budget End
Support Year
6
Fiscal Year
1996
Total Cost
Indirect Cost

  Publications

Halgren, Thomas A; Murphy, Robert B; Friesner, Richard A et al. (2004) Glide: a new approach for rapid, accurate docking and scoring. 2. Enrichment factors in database screening. J Med Chem 47:1750-9
Friesner, Richard A; Banks, Jay L; Murphy, Robert B et al. (2004) Glide: a new approach for rapid, accurate docking and scoring. 1. Method and assessment of docking accuracy. J Med Chem 47:1739-49
Baik, Mu-Hyun; Friesner, Richard A; Lippard, Stephen J (2003) Theoretical study of cisplatin binding to purine bases: why does cisplatin prefer guanine over adenine? J Am Chem Soc 125:14082-92
Baik, Mu-Hyun; Friesner, Richard A; Lippard, Stephen J (2002) Theoretical study on the stability of N-glycosyl bonds: why does N7-platination not promote depurination? J Am Chem Soc 124:4495-503
An, Yuling; Friesner, Richard A (2002) A novel fold recognition method using composite predicted secondary structures. Proteins 48:352-66
Gallicchio, Emilio; Zhang, Linda Yu; Levy, Ronald M (2002) The SGB/NP hydration free energy model based on the surface generalized born solvent reaction field and novel nonpolar hydration free energy estimators. J Comput Chem 23:517-29
Friesner, R A; Dunietz, B D (2001) Large-scale ab initio quantum chemical calculations on biological systems. Acc Chem Res 34:351-8
Gherman, B F; Dunietz, B D; Whittington, D A et al. (2001) Activation of the C-H bond of methane by intermediate Q of methane monooxygenase: a theoretical study. J Am Chem Soc 123:3836-7
Standley, D M; Eyrich, V A; An, Y et al. (2001) Protein structure prediction using a combination of sequence-based alignment, constrained energy minimization, and structural alignment. Proteins Suppl 5:133-9
Eyrich, V A; Standley, D M; Friesner, R A (1999) Prediction of protein tertiary structure to low resolution: performance for a large and structurally diverse test set. J Mol Biol 288:725-42

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