Abstract
Summary
The cysteine desulfhvdrase of rat liver was found in the cytoplasmic supernatant but was not associated with either nuclei, mitochondria, or microsomes. There was an increase in enzyme activity when the microsome fraction was added to the cytoplasmic supernatant. This increase was greater as larger amounts of microsomes were added. No enhancement was observed when microsomes were added to a whole homogenate from which microsomes only had been removed, suggesting a complex interdependence of the various cytoplasmic elements.
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