Hemoglobin Structure Protein made up of 4 subunits Every subunit contains a heme moiety attached a polypeptide chain CH3 CH=CH2 C=C HC-C C=CH CHrc-C C 少×y C-CH3 N-Fe CH=CH2 Heme CH2-C groups CH2 Hc=CC=CH COOH C=C CH2 CH3 CH2 (b) COoH6 Hemoglobin Structure Protein made up of 4 subunits Every subunit contains a heme moiety attached to a polypeptide chain