Which of the following is an example of post-translational modification?
Proline has its own codons, hydroxy proline does not have. hydroxyproline is formed from proline by post-translational modification. Glutamate to glutamine is mutation, not post-translational modification. The same is true for option c and d.
Glutamate to Glutamine
Proline to Hydroxyproline
Aspaate to Asparagine
Leucine to Isoleucine
Translation