Fig. 4. HPLC-ICP-MS chromatograms of the collected DEAE-Sepharose-FF ionexchange
column fractions. (a)–(c) denote sub-fractions F3-3, F4-2, and F5-1,
respectively (cf. Fig. 3b–d). Operating conditions are given in Table 1. Peaks:
1 = SeCys2, 2 = MeSeCys, 3 = Se (IV), 4 = SeMet.