title: Co-operative ligand binding in a protein composed of subunits.
mesh_terms: D006454:Hemoglobins; D006455:Hemoglobins, Abnormal; D008024:Ligands; D008954:Models, Biological; D010108:Oxyhemoglobins; D011485:Protein Binding; D011487:Protein Conformation; D013816:Thermodynamics
chemical_list: D006454:Hemoglobins; D006455:Hemoglobins, Abnormal; D008024:Ligands; D010108:Oxyhemoglobins