Abstract

This proposal presents a theoretical approach to a series of problems in biochemistry and neurophysiology. Model calculations of the conformations and flexibility of peptides in saline solution are proposed. The effects that peptide sequence, salt species and concentration have on conformational distributions are to be calculated. Both new techniques for calculating free energy surfaces as well as new methods for searching for significant minima are proposed. The developed methods will be applied to models of artifically cyclyzed enkephalin analogues. The results will be used to test and refine conformation/activity models of the pharmacophore for certain opioid receptors.

  Funding Agency

Agency
National Institute of Health (NIH)
Institute
National Institute of General Medical Sciences (NIGMS)
Type
Research Project (R01)
Project #
5R01GM037657-02
Application #
3293124
Study Section
Biophysics and Biophysical Chemistry A Study Section (BBCA)
Project Start
1988-08-01
Project End
1991-07-31
Budget Start
1989-08-01
Budget End
1990-07-31
Support Year
2
Fiscal Year
1989
Total Cost
Indirect Cost

  Institution

Name
University of Houston
Department
Type
Schools of Arts and Sciences
DUNS #
800771594
City
Houston
State
TX
Country
United States
Zip Code
77204

  Publications

Seckfort, Danielle; Montgomery Pettitt, B (2018) Price of disorder in the lac repressor hinge helix. Biopolymers :e23239
Dai, Wei; Chen, Muyuan; Myers, Christopher et al. (2018) Visualizing Individual RuBisCO and Its Assembly into Carboxysomes in Marine Cyanobacteria by Cryo-Electron Tomography. J Mol Biol 430:4156-4167
Drake, Justin A; Pettitt, B Montgomery (2018) Thermodynamics of Conformational Transitions in a Disordered Protein Backbone Model. Biophys J 114:2799-2810
Sarma, Rahul; Wong, Ka-Yiu; Lynch, Gillian C et al. (2018) Peptide Solubility Limits: Backbone and Side-Chain Interactions. J Phys Chem B 122:3528-3539
Kolawole, Abimbola O; Smith, Hong Q; Svoboda, Sophia A et al. (2017) Norovirus Escape from Broadly Neutralizing Antibodies Is Limited to Allostery-Like Mechanisms. mSphere 2:
Zhang, Cheng; Drake, Justin A; Ma, Jianpeng et al. (2017) Optimal updating magnitude in adaptive flat-distribution sampling. J Chem Phys 147:174105
Asthagiri, D; Karandur, Deepti; Tomar, Dheeraj S et al. (2017) Intramolecular Interactions Overcome Hydration to Drive the Collapse Transition of Gly15. J Phys Chem B 121:8078-8084
Ou, Shu-Ching; Drake, Justin A; Pettitt, B Montgomery (2017) Nonpolar Solvation Free Energy from Proximal Distribution Functions. J Phys Chem B 121:3555-3564
Karandur, Deepti; Harris, Robert C; Pettitt, B Montgomery (2016) Protein collapse driven against solvation free energy without H-bonds. Protein Sci 25:103-10
Ou, Shu-Ching; Pettitt, B Montgomery (2016) Solute-Solvent Energetics Based on Proximal Distribution Functions. J Phys Chem B 120:8230-7

Showing the most recent 10 out of 70 publications