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. 2019 Dec 17;10:5762. doi: 10.1038/s41467-019-13775-1

Fig. 3. Illustration of the IDA principle and fluorescence titrations.

Fig. 3

a Illustration of the IDA principle. Competitive titrations of GC5A-6C•Fl (0.4/0.5 μM) with b PFOS (up to 2.4 μM) and c PFOA (up to 7.6 μM). (Inset) The associated titration curves of b PFOS and c PFOA fit according to a 1:1 competitive binding model. All experiments were performed in HEPES buffer at 25 °C, λex = 500 nm, and λem = 513 nm. Data represent mean ± s.d. (n = 3 independent experiments).