Figure 7.
Amino acid sequences of adx (top) and fdx (bottom) showing residues located around the [2Fe-2S] cluster. Cysteine ligand residues are marked in Bold. The nitrogens of the underlined residues indicate candidates for the N1 and N2 carrying largest unpaired spin density (see text). The structures of adx and fdx are shown in Fig. S4, ESI.