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Interazioni non covalenti - Structural Biology

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Interazione elettrostatica tra NH 3 + e COO - in Ala che<br />

diminuisce all’aumentare della distanza (Ala) 4<br />

Ala + + Ala - Ala -<br />

NH 3 + -CH(CH3)-COOH NH 3 + -CH(CH3)-COO -<br />

Ala + + Ala - Ala -<br />

NH 2 -CH(CH3)-COO -<br />

pK 1 pK 2<br />

2.34 9.69<br />

+ Ala-Ala + Ala-Ala - Ala-Ala - 3.12 8.30<br />

+ Ala-Ala-Ala + Ala-Ala-Ala - Ala-Ala-Ala - 3.39 8.03<br />

+ Ala-Ala-Ala-Ala + Ala-Ala-Ala-Ala - Ala-Ala-Ala-Ala - 3.42 7.94

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