Spectroscopic and Theoretical Studies of Hg(II) Complexation with Some Dicysteinyl Tetrapeptides

Figure 4

Circular dichroism spectra of 100 μM tetrapeptides, (a) CGCG, (b) ECGC, (c) HCGC, and (d) WCGC following titrations with increasing mole equiv of HgCl₂ as indicated by direction of arrow for 210 nm band. Insets show changes in molar ellipticity value at 193 nm and 210 nm versus mole equiv of HgCl₂ added.

(a)

(b)

(c)

(d)