Fig. 4
From: Synthesis of disulfide-rich heterodimeric peptides through an auxiliary N, N-crosslink
Analytical HPLC profiles in human insulin synthesis. HPLC profile of purified insulin A-chain 9 and B-chain 12, ligation intermediate 13, purified single-chain insulin 14, DKP cleavage reaction mixture 1 + 15, and purified insulin 1
