Which of the following statements is true of methionine?
A) It is the last amino acid at the C-terminus of an active protein in the body.
B) It is the last amino acid at the N-terminus of an active protein in the body.
C) It is the first amino acid that is added to the C-terminus of a new protein during protein synthesis
D) It is the first amino acid that is added to the N-terminus of a new protein during protein synthesis.

Question

Quizplus · Accepted Answer

Methionine is the first amino acid to be added to the N-terminus of a new protein during protein synthesis. This is because the start codon (AUG) codes for methionine and serves as the initiation codon for protein synthesis.

Which of the Following Statements Is True of Methionine