Solvent Effect Study on the Stability Energies of Glycine, Alanine and Valine Amino Acides

Abstract

Glycine, Alanine and Valine are taken as amino acids with an equal polar head and with the<br />difference in the length of hydrocarbon chains. The structural optimizations show the results of the<br />isolated Glycine, Alanine and Valine in the gases phase, at the Hartree-Fock level by means of<br />STO-3G,3-21G, 6-31G and 6-31+G basis sets. The calculations were performed for the ten (1-10)<br />solvents using PCM model method at HT/6-31+G and then the dielectric effects of the surrounding<br />were analyzed. The solvent effect on the stability of Glycine, Alanine and valine molecules was<br />discussed.