Fig. 2. Synthesis of a library of peptoids containing DKP side chains.

(a) General synthetic scheme of DKP-SC peptoid library. (b) Top-left: MS of a peptoid ([MH+] = 1240.7) obtained after CNBr mediated single bead cleavage; Top-right: Structure of the peptoid identified after MALDI-TOF based sequencing; Bottom: MS/MS of a peptoid obtained from MALDI-TOF with the precursor mass 1240.5.