separation of the homogenates into particulate ( microsomal and mitochondrial ) and supernatant ( soluble/cytoplasmic ) fractions showed approximately the same amounts of enzyme activity in both fractions , while dialysis of the fractions slightly reduced the trh peptidase activity present , suggesting that a diffusible co-factor might be partially involved in the releasing hormone 's degradation .
C0026237
mitochondrial
C0010834
cytoplasmic