Ab initio studies of receptor interactions with AMPA ((S)-2-amino-3-(3-hydroxy-5-methyl-4-isoxazolyl) propionic acid) and kainic acid (2S-(2 alpha, 3 beta, 4 beta))-2-carboxy-4-(1-methylethenyl)-3-pyrrolidineacetic acid.

Abstract excerpt

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...

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