An $\alpha$ -Helix Has the Sequence: NH₃⁺-Ser-Glu-Gly-Asp-Trp-Gln-Leu-His-Val-Phe-Ala-Lys-Val-Glu-COO-

question 87

Multiple Choice

An $\alpha$ -helix has the sequence: NH₃⁺-Ser-Glu-Gly-Asp-Trp-Gln-Leu-His-Val-Phe-Ala-Lys-Val-Glu-COO-. The carbonyl oxygen (in the peptide bond) of the histidine residue is hydrogen bonded to the amide nitrogen of

• A) Asp.
• B) Lys.
• C) Trp.
• D) Ala.

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