Figure 4. Binding sites between Fe-protein and MoFe-protein.

Binding sites inferred on α (a) and β (b) subunits of MoFe protein, PDB chain 1MIO_A and 1MIO_B respectively. Two helical regions assumed to be critical for interaction are shown in magenta. Binding site residues are shown by side chains (in red color) and match with residues predicted by Kim at al. Binding site residues shown in yellow on α subunit (1MIO_A) are part of inserted 50 residues sequence and are not predicted by IBIS.