試題詳解

22. There is no codon for the amino acid hydroxyproline, but this amino acid is a prominent feature ol collagen structure. Which of the following is a likely explanation?
(A) Hydroxyproline is substituted for proline after translation by a cut and patch mechanism.
(B) Proline is covalently modified to give hydroxyproline after translation.
(C) There is an alternative mechanism for synthesis of proteins that contain hydroxyproline.
(D) All of the above are likely explanations.
(E) It is not possible to fbnn a hypothesis from tiie information given.