Question: 2. (45 points: 3 point for each correct structure and 2 points for each H-bond) Draw the chemical structures accurately showing hydrogen bonding between the

2. (45 points: 3 point for each correct structure and 2 points for each H-bond) Draw the chemical structures accurately showing hydrogen bonding between the indicated species. In some instances the nature of the donor and acceptor species is specified. Draw structures in the ionization states expected at pH 7.4. A. Histidine side chain and aspartic acid side chain B. Serine side chain and carbonyl oxygen of peptide bond C. Tyrosine side chain and amide group of peptide bond D. Tryptophan side chain and bicarbonate ion E. Histidine to asparagines (acceptor) through an intervening water molecule; that is, a His-water-Asn arrangement 2. (45 points: 3 point for each correct structure and 2 points for each H-bond) Draw the chemical structures accurately showing hydrogen bonding between the indicated species. In some instances the nature of the donor and acceptor species is specified. Draw structures in the ionization states expected at pH 7.4. A. Histidine side chain and aspartic acid side chain B. Serine side chain and carbonyl oxygen of peptide bond C. Tyrosine side chain and amide group of peptide bond D. Tryptophan side chain and bicarbonate ion E. Histidine to asparagines (acceptor) through an intervening water molecule; that is, a His-water-Asn arrangement

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