DAD CD spectra of the refolding of WT (A) and Δ140-149-SS(+) (B). The DAD CD spectra of the first, second, and third phases are represented by open circles, open squares, and open triangles, respectively. These spectra were normalized by the integrated ellipticity ranging from 212 nm to 238 nm. The broken and solid lines represent the interpolated lines among the data points.