The C-terminus of a polypeptide always contains
A) a stop codon.
B) a carboxyl group.
C) an amino group.
D) carbon dioxide.
E) None of the answers are correct.

Question

Quizplus · Accepted Answer

The C-terminus of a polypeptide always ends with a carboxyl group (-COOH), which is formed from the carboxyl end of the last amino acid in the polypeptide chain. The stop codon is found in the mRNA sequence, which specifies the end of the polypeptide chain during translation. The amino group (-NH2) is located at the N-terminus of the polypeptide. Carbon dioxide is not typically found in polypeptides.

The C-Terminus of a Polypeptide Always Contains