Abstract
AbstractThe heat of solution and the osmotic pressure of bovin hemoglobin in aqueous solution have been measured at 298 K using a twin microcalorimeter and an osmometer. The heat of association, ΔH, from calorimetric measurement and the association equilibrium constant, K, from osmometric measurement have been estimated, respectively. Also the thermodynamic quantities of the hemoglobin molecule which associates from 2αβ to the original α2β2 form are calculated. In all systems of the hemoglobin solutions, the value of dissociation equilibrium constant, K', calculated as the reciprocal of K, and that of ΔH seem to be of comparable order to those determined by the other investigators.
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