Co-operative binding of oxytocin to bovine neurophysin II.


The interaction of oxytocin with bovine neurophysin II in 0.1 M-sodium phosphate, pH 5.8, was investigated by equilibrium-dialysis and sedimentation studies. Sigmoidality of the binding curve is attributed to isomerization, either hormone-induced or pre-existing, with preferential binding of oxytocin to one isomeric state. Results are consistent with a… (More)


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