Supplementary Figure 1: Calculated magnetic field dependence of the transverse relaxation rates for 13CF nuclei and 19FC nuclei in aromatic amino acids with various 19F substitutions.

Blue triangles represent the relaxation rates of decoupled resonances, and red squares represent those of TROSY resonances. The points are connected by a dashed line to provide visual clarity. The relaxation rates are calculated for the respective 19F-bearing amino acids incorporated into a protein with a rotational correlation time (τc) of 25 ns.