Which of the above tripeptides contains the largest number o

Y7) For these five tripeptides: Peptide 1 Peptide 2 Peptide 3 Peptide 4 Peptide 5 Tyr-Lys-Met Gly-Pro-Arg Asp-Trp-Tyr Asp-Gly-Glu Leu-Ile-Phe Which one of the above tripeptides contains the largest number of nonpolar R groups? Which one of the above tripeptides is most negatively charged at pH 7?

Solution

Answer:

Peptide 5 contain largest number of non polar R groups

(Leucine isoleucine, and phenylalanine)

Peptide 4 is most negatively charged at pH 7

(Aspartate and glutamate are negatively charged R group at pH7)