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  • Title: Purification and characterization of acid phosphatase in rat liver lysosomal contents.
    Author: Himeno M, Koutoku H, Tsuji H, Kato K.
    Journal: J Biochem; 1988 Nov; 104(5):773-6. PubMed ID: 3235452.
    Abstract:
    Acid phosphatase in rat liver lysosomal contents, C-APase I, was purified about 5,700-fold over the homogenate with 8.0% recovery, to apparent homogeneity as determined from the pattern on polyacrylamide gel electrophoresis in the presence and in the absence of SDS. The purification procedures included; preparation of crude lysosomal contents, DEAE-Sephacel ion exchange chromatography, hydroxylapatite chromatography, and gel filtration with Sephacryl S-300. The enzyme is composed of three identical subunits with an apparent molecular weight of 48K. The enzyme contains about 11% carbohydrate and the carbohydrate moiety was composed of mannose, fucose, N-acetylglucosamine, and N-acetylgalactosamine in a molar ratio of 20:3:11:1. Sialic acid was not detected in the enzyme. Antisera against the purified C-APase I were raised in goat and the C-APase I was rapidly purified with high yield (10%) by using the specific antibodies coupled to Sepharose 6B.
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