Abstract

Theroleofelectrostaticinteractionsinstabilizingthenative state of proteins is controversial. While on the one hand theorists and experimentalists have claimed a crucial role for electrostatic effects in protein unfolding, other s disagree. And while there have been many theoretical simulations of proteins under difference conditions, relatively little attention has been devoted to pH effects. This is due at least in part, to the use of crude electrostatic models (vis, truncated Coulomb) which have prevented the accurate modeling of processes where electrostatic effects dominate using explicit solvent. Our project is focused on the pH-induced unfolding of a protein to form the molten globule state. We have chosen to study alpha-Lactalbumin (GPLA) in its low pH form (A state), the best experimentally characterized molten globule. A. Scientific Subproject

  Funding Agency

Agency
National Institute of Health (NIH)
Institute
National Center for Research Resources (NCRR)
Type
Biotechnology Resource Grants (P41)
Project #
5P41RR006892-08
Application #
6282748
Study Section
Project Start
1998-05-05
Project End
1999-05-04
Budget Start
1997-10-01
Budget End
1998-09-30
Support Year
8
Fiscal Year
1998
Total Cost
Indirect Cost

  Institution

Name
Columbia University (N.Y.)
Department
Type
DUNS #
064931884
City
New York
State
NY
Country
United States
Zip Code
10027

  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

Showing the most recent 10 out of 22 publications