Figure 10

Circular dichroism spectra of Bcp1 and its mutants. (A) CD spectra of native Bcp1 (1.25 μM) (black line); rBcp1 (1.25 μM) in 0.2 M urea (blue line) and rBcp1 (1.25 µM) in 8 M urea (red line). The spectrum of rBcP1 in 8 M urea cannot be extended below 218 nm due to the interference of 8 M urea. (B) CD spectra of C45S (1.25 µM) (black line) and rC45S (1.25 μM) in 0.2 M urea (blue line). (C) CD spectra of C50S (1.25 µM) (black line) and rC50S (1.25 µM) in 0.2 M urea (blue line). CD spectra for the three proteins were recorded at pH 7.4, 25 °C.