Circular dichroism and 1D NMR data for BRD1 and 2. A) Circular dichroism spectra for a solution of BRD2 with (white circles) and without (black circles) 10 mM CaCl2 at room temperature. B) 1D NMR data for ~0.5 mM BRD1 in 90% H2O,10% D2O at pH 6.5. C) 1D NMR data for BRD1 as above plus 3.85 mM CaCl2. This figure shows the aromatic, amide NH, and indole NH region (6.0 to 11.0 ppm) of 600 MHz 1H NMR spectra.