hemoglobin (human, hb) protein molecule, 3d rendering. iron-containing oxygen transport protein found in red blood cells. atoms

pdb4hhb human hemoglobin deoxyhemoglobin blood iron oxygen transport haemoglobin complex heme hb red cells carbon dioxide monoxide co2 globin globular nitric oxide no co hypoxia anemia bilirubin porphyria hematocrit structure peptide protein 3d rendering amino acid molecule polypeptide polymer atoms science scientific disease health molecular model