Figure 1.
A. Structure of wt-sfGFP (PDB ID 2B3P) with site 75 (magenta) and site 134 (cyan) highlighted. B. Structure of 4-cyano-L-phenylalanine (pCNPhe, 1), 4-azido-Lphenylalanine (pN3Phe, 2), and 4-azidomethyl-L-phenylalanine (pN3CH2Phe, 3).
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