Abstract:Both the DPN- and TPN-linked 17β-hydroxy-C19-steroid dehydrogenase activities of the dog prostate were localized in the microsomal fraction. The usual procedure of tissue fractionation resulted in a loss of DNA from the nuclei and an unsatisfactory separation of the subcellular components. Initial homogenization in 2.2 m sucrose, however, not only yielded clean nuclei but also permitted an effective separation of the mitochondrial, microsomal, and soluble fractions. The completeness of the separations was char… Show more
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