1. Draw the peptide KTQHV, write the sequence using 3-letter abbreviation for the amino acids, and identify: a. The N- and C-termini. b. Every -carbon of the sequence, by labeling them with " ". c. All peptide bonds. d. Hydrogen bond donors and acceptors in the polar side chains. e. Covalent bonds that correspond to the backbone phi () and psi () angles f. Ionizable R-groups of amino acids in this sequence (circle them). i. Choose one ionizable group and draw it at pH1,pH7, and pH14 and indicate the approximate net charge at each pH. ii. What fraction of His residues are charged at pH=5.8