Figure 3.

MagRs from different species can be classified into three different types based on UV-Vis spectra

A: UV−Vis absorption spectra of MagR proteins from 23 representative species. Typical peaks at 330 nm, 420 nm, and 460 nm are indicated with arrows. B, C: Comparison of iron-sulfur cluster binding in MagRs from 23 species was quantified by the ratio of absorption peaks at 420 nm (B) and 460 nm (C) relative to absorption peaks at 330 nm. Three types of MagRs were classified based on the ratio. D–F: UV-Vis spectra of 23 MagRs classified into three types. Type 1 MagR was represented by ecIscA (D), type 2 MagRs were represented by three MagRs (E), and type 3 MagRs were represented by the remaining 19 MagRs.