Each chain is structurally similar to myoglobin Each chain contains a bound heme-Fe2+ Binds a total of 4 oxygen molecules to its four heme groups. Carries O2 from lungs to tissues, increasing the solubility of O2 in blood Spectral changes due to Oxygen binding. ...
3. To fit the experimental data, His, His and O2, and His and CO were employed as the axial ligands for the ferrous, the O2-bound, and the CO-bound hemes, respectively. The atomic coordination of corresponding myoglobin derivatives were employed as a starting model of the curve fitting. ...