Which of the following is not a feature of collagen?
A) a repeating tripeptide sequence, Gly-Xaa-Pro or Gly-Xaa-HyPro
B) a long triple helix
C) the unusual amino acid hydroxyproline
D) glycine at every third residue of the helix
E) beta-pleated sheet secondary structure

Question

Quizplus · Accepted Answer

Collagen does not have beta-pleated sheet secondary structure, instead it has a long triple helix composed of the repeating tripeptide sequence (Gly-Xaa-Pro or Gly-Xaa-HyPro) with glycine at every third residue of the helix and the unusual amino acid hydroxyproline.

Which of the Following Is Not a Feature of Collagen