The step in solid-phase peptide synthesis that occurs at number 3 is
A) deblocking of the residue attached to the resin.
B) coupling of the amino acid.
C) cleavage from the resin.
D) activation of the Fmoc blocked residue.

Question

The step in solid-phase peptide synthesis that occurs at number 3 is 
A) deblocking of the residue attached to the resin. 
B) coupling of the amino acid. 
C) cleavage from the resin. 
D) activation of the Fmoc blocked residue.

Quizplus · Accepted Answer

The step that occurs at number 3 in solid-phase peptide synthesis is the coupling of the amino acid. This involves adding an activated amino acid to the growing peptide chain on the resin.

The Step in Solid-Phase Peptide Synthesis That Occurs at Number