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. 2011 Oct 15;43(3):1025–1047. doi: 10.1007/s00726-011-1111-z

Fig. 7.

Fig. 7

Schematic workflow of carbodiimide condensation coupled with bead fishing. The R-group is a hydrogen atom (–H) in a serine and methyl group (–CH3) in a threonine. tBoc—t-butyl-dicarbonate, EDC—N,N′-dimethylaminopropyl ethyl carbodiimide, TFA—trifluoroacetic acid