The molecular mechanism of the in vitro 4 S to 5 S transformation of the uterine estrogen receptor.

Animals Centrifugation, Density Gradient Chromatography, Gel Cytosol/metabolism Dose-Response Relationship, Drug Estradiol/metabolism Estrogens/metabolism Female Hydrogen-Ion Concentration Models, Chemical Molecular Weight Osmolar Concentration Potassium Chloride/pharmacology Protein Binding Proteins/isolation & purification,metabolism Rats Receptors, Cell Surface/drug effects Tritium Urea/administration & dosage,pharmacology Uterus/cytology,drug effects,metabolism

Estrogens Proteins Receptors, Cell Surface Tritium Estradiol Potassium Chloride Urea