Abstract
The equilibrium characteristics of the recombined molecule formed by noncovalent interaction of two fibrinolysin fragments of ovine prolactin (oPRL) have been studied with fluorescence polarization. Fluorescein isothiocyanate (isomer I) was used to label oPRL-(1-53), creating a fluorescent peptide indistinguishable from the unlabeled fragment in the complementation reaction with oPRL-(54-199). The dissociation constant of the recombinant prolactin was 0.144 microM at 30 degrees C, with a free energy of dissociation of 9.50 kcal/mol.
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Selected References
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