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Nuclear magnetic resonance studies of hemoglobin: functional state correlations and isotopic enrichment strategies.

AbstractHemoglobin is a protein of outstanding biological importance whose function in the transport of oxygen and carbon dioxide is well understood.1 The functional cycle in the erythrocyte is known in some detail. Allosteric effectors such as organic phosphates, hydrogen ions, and carbon dioxide are recognized, and their adjustments under varying conditions have been described.1,2 Numerous abnormal forms are known and have been studied in great detail.1-4