There Is No Codon for the Amino Acid Hydroxyproline, but This

question 76

Multiple Choice

There is no codon for the amino acid hydroxyproline, but this amino acid is a prominent feature of 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) It is not possible to form a hypothesis from the information given.

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