Figure 2.

The β2 strand of the T193A CTD shows increased dynamics that are not concentration‐dependent. ¹⁵N‐R ₂ profiles for WT CTD (grey) and T193A (red) at A) 288 K and various concentrations and B) 298 K and 0.5 mM. The data were recorded at 600 MHz with a ¹⁵N‐R _1ρ sequence ^[14] and a 1.5 kHz spinlock field, and then converted to R ₂ values. Residues in the β2 strand, hairpins are highlighted with blue, green boxes respectively. If error bars are not visible, they are smaller than the circles representing the experimental data point.