問題詳情

22. Which one of these characteristics is FALSE for the α-helix in protein?
(A) There are 3.6 amino acids per turn.
(B) There is a requirement for glycine in every third amino acid residue.
(C) A H-bond forms between the carbonyl oxygen of the

amino acid residue and the amidoproton of the

amino acid residue.
(D) Proline is typically not found in the α-helix.
(E) A single turn of the helix extends about 5.4 Å along the long axis.

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Gly, Pro在a-helix中最少見 ,在 beta-turn中最常見