the comparison of the soret mcd spectra of reduced proteins in their equilibrium and non-equilibrium forms with those of other high-spin ferrous hemoproteins suggest that mercaptide ( rs- ) is the protein ligand of the heme iron in reduced p450 , as well as in its co-complex , and that imidazole of histidine is the fifth ligand of the iron both in reduced p420 and its co-complex .
C0033684
proteins
C0018974
protein