Figure 1: Pairwise alignment of respective Ni and Zn-GlxI domains from delta proteobacterial species, Myxococcus xanthus DK 1622 (Mx108756890) and Bdellovibrio bacteriovorus HD100 (Bb42524256).

The bold letters indicate loop regions (A and B) that exist only in the Zn-GlxI.