Abstract
The optimum geometries and binding energies of the complexes formed by AMPA and Kainic acid, as well as their anions with tyrosine, proline and some tripeptides are investigated with quantum chemical calculations (HF/6-31G**). It was found that receptors featuring the Tyr-Ala-Pro sequence exhibit stronger binding energies to the substrates than the Tyr-Ser-Pro and Tyr-Ser-Ser. As expected, the anions are more bound than the neutral species. This work can lead to investigations on the effect of AMPA receptors mutations on the brain functions, possibly related to criminal tendencies.
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