西昌学院食品科学系 Figure 2: The pictureare the right is of the heme group in hemoglobin and shows the Fe(II) iron atom. Figure 1: The picture is the secondary structure of hemoglobin, with only the protein backbone and without the side chains西昌学院食品科学系 Figure 2: The pictureare the right is of the heme group in hemoglobin and shows the Fe(II) iron atom. Figure 1: The picture is the secondary structure of hemoglobin, with only the protein backbone and without the side chains