FBXLS's N-terminus encodes an iron-binding hemerythrin domain. A
Schematic of the predicted a-helices (cylinders), conserved iron-binding ligands
(magenta), and possible iron-binding ligands (pink) in the human FBXL5 hemerythrin
domain. Helical bounds for the FBXL5 were determined by combining
information from helices observed in other structures with predictions from
sequence alignments. B Model of the FBXL5 hemerythrin domain mapped
upon a solved hemerythrin structure (2pOn). Six conserved Fe-binding residues
are colored magenta and residues that could replace the seventh Fe-binding
residue are colored pink.