Thepredominantform ofisoleucineat differentpHvalues is shown below:At pH 1: carboxyl group will be in its acidic form, -COOH. The amino groups will be NH₃⁺.At pH 7: The carboxyl group will be COO⁻, while the amino group will still be  NH₃⁺.At pH 13: Both carboxyl and amino groups of isoleucine will be deprotonated in their form COO⁻ and NH₂Protonated state of isoleucine at different pHIsoleucinehas two ionizable groups:a carboxyl group (-COOH) with a pKa of 2.4an amino group (-NH₂) with a pKa of 9.7.At pH values below the pKa values, the groups will be protonated (i.e., they will have ahydrogenion, H⁺). At pH values above the pKa values, the groups will be deprotonated (i.e., they will not have a hydrogen ion).At pH 1 (acidic conditions), both groups will be protonated:The carboxyl group (-COOH) will have a proton (H⁺) and be in itsacidic form, -COOH.The amino group (-NH₂) will have a proton (H⁺) and be in its acidic form, -NH₃⁺.At pH 7 (neutral conditions), the carboxyl group (-COOH) will lose its proton and be in its deprotonated form, -COO⁻. The amino group (-NH₂) will still be protonated, as the pH is below its pKa value:The carboxyl group (-COOH) will lose a proton (H⁺) and be in itsdeprotonated form, -COO⁻.The amino group (-NH₂) will have a proton (H⁺) and be in its acidic form, -NH₃⁺.At pH 13 (basic conditions), both groups will be deprotonated:The carboxyl group (-COOH) will have lost its proton and be in its deprotonated form, -COO⁻.The amino group (-NH₂) will lose its proton and be in its deprotonated form, -NH₂.learn more about theionizable groupof an amino acidbrainly.com/question/30436166#SPJ11...

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