g Peptide chains consist of more than one amino acid joined together. (13) a. Draw the peptide chain at physiological pH of His, Trp, Gly, Pro, Gly, Val, Asp, Leu. Specify the C-terminus and the N-terminus by circling. b. The order of these amino acids is classified as protein structure. c. What kinds of tertiary interactions could this peptide chain be involved in. d. Name an example of a secondary protein structure