Conformational Analysis of Tyrosyl-Lysyl-Threonine Tripeptide Using MM, MD and QM Methods and Its Hyperpolarizability Study

Year 2022, Volume: 26 Issue: 4, 745 - 756, 31.08.2022

Bilge Bıçak , Serda Kecel Gunduz

https://doi.org/10.16984/saufenbilder.1025541

Abstract

Peptides are important structures that offer important opportunities for therapeutic interventions in various diseases. Tyrosyl-Lysyl-Threonine is an important peptide structure that contains the antiviral, antioxidant and anticancer properties of the amino acids in its structure. Examination of the conformational structure, which has great importance on both the ability of the molecule to fulfill its biological functions and electronic properties, is important for molecular studies. In this study, determination of the stable conformations and optimization of the most stable structure of Tyrosyl-Lysyl-Threonine molecule was carried out using molecular mechanical and quantum mechanical methods. With molecular dynamics simulation studies, the changes in conformational structure, RMSD and Rg values in different environments were monitored for 10 ns. Additionally, the hyperpolarizability study of Tyrosyl-Lysyl-Threonine were carried out. As a result of this study, it was aimed to determine the optimized geometry of the tripeptide, its conformational changes and nonlinear optical properties.

Keywords

peptide, conformational analysis, hyperpolarizability

Supporting Institution

İstanbul Üniversitesi

Project Number

FDK-2018-32253

Thanks

We thank Prof Dr Petra Imhof and her team for their advice on MD studies.

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