Solubilization of 17β-hydroxysteroid dehydrogenase from rat liver microsomes
1982
Abstract The conditions for the solubilization of 17β-hydroxysteroid dehydrogenase from a rat liver microsomal preparation with the non-ionic detergent Triton X-100 were studied. The recoveries of 17β-hydroxysteroid dehydrogenase activity and of proteins in the solubilized form were determined as a function of detergent concentration, of pH and temperature, of incubation time and of saline concentration. The soluble fraction obtained under the optimal conditions contained 80% of the proteins and 75% of the enzymatic activity of initial microsomes. The presence of Triton X-100 in the solubilized proteins was not essential for enzyme activity.
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