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. 2015 Jul 29;5:12632. doi: 10.1038/srep12632

Figure 1. Chemical structures of natural and unnatural amino acids used in this study.

Figure 1

(1: p-acetyl-L-phenylalanine, AcF; 2: 3-iodo-L-tyrosine, IoY; 3: p-iodo-L-phenylalanine, IoF; and 4: L-tyrosine, Tyr).