Abstract
Ala-Tyr (Alanine-Tyrosine) dipeptide is a compound with hypertensive and high antioxidant effect. Here, the structural features of this molecule were studied using the PM3 semi-empirical quantum-chemical method. In order to investigate the research, the initial coordinates of the molecule were obtained by the molecular mechanics method. Geometric and electronic parameters, HOMO and LUMO energies, energy gap, dipole moment and partial charges of atoms were calculated for the stable conformations, belonging to both folded and extended shapes of the dipeptide backbone. The obtained results can be used in the research of the structure-function relationships of the investigated bioactive dipeptide and in the design of new peptidomimetics.
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