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  • Title: The isolation of lysosomes from normal rat liver by affinity chromatography.
    Author: Kamrath FJ, Dodt G, Debuch H, Uhlenbruck G.
    Journal: Hoppe Seylers Z Physiol Chem; 1984 May; 365(5):539-47. PubMed ID: 6469216.
    Abstract:
    Lysosomes from normal rat liver were isolated by affinity chromatography using Sepharose-bound Ricinus communis agglutinins I + II. Characterization of the lysosomal fraction by marker enzymes showed--compared with the homogenate--an enrichment in: acid phosphatase and arylsulfatase about 30- to 60-fold, the tartrate-sensitive acid phosphatase about 95-fold, whereas beta-D-glucosidase, beta-D-galactosidase and sphingomyelinase showed a much higher enrichment of 170- to 260-fold. Marker enzymes for other cell organelles were not detectable. The phospholipid pattern and optical control with electron microscopy gave further indications that the isolated fractions were very rich in lysosomes. A comparison of the phospholipid compositions of plasma membranes isolated from normal rat liver and membranes from the isolated fractions of lysosomes, showed that they were quite different; in particular bis(monoacylglycero)phosphate, which we found to be a typical lysosomal phospholipid, was absent in plasma membranes.
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