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. Author manuscript; available in PMC: 2018 Jun 14.
Published in final edited form as: J Am Chem Soc. 2017 Jun 5;139(23):7931–7938. doi: 10.1021/jacs.7b03114

Figure 2.

Figure 2

Primary sequence of peptide 1 and backbone-modified analogues 2–9 (B = norleucine). Bold residues indicate positions where the backbone is altered. For residue types with “R” groups, the identity of the side chain is that of the corresponding α-residue denoted by the single letter code found in the sequence.