This domain is found once in the putative Cobalamin biosynthesis protein G homolog from the archaea Saccharolobus solfataricus (CbiG-like), C-terminal to Pfam:PF11760 and N-terminal to Pfam:PF01890. It is also found several times in uncharacterised proteins from lower eukaryotes, some of which also contain ankyrin repeats (Pfam:PF00023, Pfam:PF12796, Pfam:PF13637, Pfam:PF13857, Pfam:PF13606).