Figure 4
View of the final 2mFo − DFc electron-density map for the heme pockets of MetHb: (a) the α subunit and (b) the β subunit. Density is contoured at 1.1σ. The distance between His58/63 and the heme iron is 4.1 Å, while the distance between the water molecule and the heme iron is 2.1 Å |