Okonjo, K. O. and Iwuoha, E. I.
(1986)
Subunit iron spin heterogeneity in human aquomethemoglobin A.
Biochimica et Biophysica Acta.
pp. 304-307.
Abstract
On the basis of a reaction scheme in which the ligand binding steps are preceded by fast iron spin transitions (Okonjo, K.O. (1980) Eur. J. Biochem. 105, 329-334; Iwuoha, E.I. and Okonjo, K.O. (1985) Biochim. Biophys. Acta 829, 327-334), the spin equilibrium constants of methemoglobin subunits are calculated from kinetic and equilibrium binding parameters with azide ion as ligand. The results demonstrate the existence of thermodynamic spin heterogeneity within the tetramer.
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