PF01814 InterPro IPR012312 PROSITE PDOC00476 SCOP 2hmq SUPERFAMILY 2hmq Available protein structures: Pfam structures PDB RCSB PDB ; PDBe PDBsum structure summary The hemerythrin/HHE cation-binding domain occurs as a duplicated domain in hemerythrins, myohemerythrins and related proteins. This domain binds iron in hemerythrin, but can bind other metals in related proteins,