3FEP:
reference: "Turn-On" Protein Fluorescence: In Situ Formation of Cyanine Dyes., Yapici I, Lee KS, Berbasova T, Nosrati M, Jia X, Vasileiou C, Wang W, Santos EM, Geiger JH, Borhan B, J Am Chem Soc. 2015 Jan 14. PMID: 25534273

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