Question

Which of the following are types of posttranslational modifications a newly synthesized protein may undergo? Select all the choices that apply. There may be several correct answers.

a. proteolysis

b. isomerization

c. addition of amino acids

d. addition of functional groups

e. modification of amino acids

Answer 1

Post translational modification generally deals with the covalent bond and general enzymatic modification of protein at the time of protein biosynthesis of can be done after protein biosynthesis.

Post translational modification mainly occur on the modification of amino acid side chain and this chain can be elongated by the addition of functional group like acetate, phosphate, sulphate and amide group.Phosphorylation is a basic mechanism to control Post translational modification.

Hence the option d and e , both are correct answer.