Which of the following substances cannot be used to cleave peptide bonds in polypeptides?
A)trypsin
B)cyanogen bromide
C)endopeptidases
D)2-mercaptoethanol
E)pepsin

Question

Quizplus · Accepted Answer

2-mercaptoethanol is a reducing agent used to break disulfide bonds, but it cannot cleave peptide bonds. Trypsin, cyanogen bromide, endopeptidases, and pepsin can all be used to cleave peptide bonds in polypeptides.

Which of the Following Substances Cannot Be Used to Cleave