Figure 1. Schematic protein domain structure for the four families of fungal iron regulators.
DNA-binding domains (either Zn-finger or bZIP) are shaded in blue with specific Zn-finger binding residues shown in blue text. CBC-binding regions are shaded in purple. Coiled-coil regions are shown in gray. Confirmed Fe-S binding domains are shaded dark orange with specific Fe-S binding residues in red text. Putative Fe-S binding domains and other Cys-rich regions are shaded in light orange. A conserved C-terminal region in HapX/Hap43 regulators that is required for their response to iron starvation is shaded in green. Sc, S. cerevisiae; Cg, C. glabrata; Sp, S. pombe; An, A. nidulans; Af, A. fumigatus; Ca, C. albicans; Cn, C. neoformans.