Exhibit 4A The following question(s) refer to this peptide:
Cys-Ala-Gly-Arg-Gln-Met
Refer to Exhibit 4A. The carboxyl terminal end is:
A) Arg
B) Cys
C) Gln
D) Met
E) None of these.

Question

Quizplus · Accepted Answer

The carboxyl terminal end of a peptide is the end with the free carboxyl group (-COOH). In the given peptide sequence (Cys-Ala-Gly-Arg-Gln-Met), Met (Methionine) is the last amino acid, making it the carboxyl terminal end.

Exhibit 4A the Following Question(s) Refer to This Peptide