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Purification, some properties, and tissue distribution of a major lysosome-associated membrane glycoprotein (r-lamp-2) of rat liver.

Purification, some properties, and tissue distribution of a major lysosome-associated membrane glycoprotein (r-lamp-2) of rat liver. Research Abstract Details 

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  • Purification, some properties, and tissue distribution of a major lysosome-associated membrane glycoprotein (r-lamp-2) of rat liver. Abstract Text:

    k akasakiK Akasaki,y yamaguchiY Yamaguchi,k furunoK Furuno,h tsujiH Tsuji,

    We previously purified and characterized a major lysosomal membrane glycoprotein (r-lamp-1) from rat liver [Akasaki et al. (1990) Chem. Pharm. Bull. 38, 2766-2770]. The present study describes the purification of another major lysosomal membrane glycoprotein (r-lamp-2) from rat liver and compares the tissue distribution of r-lamp-1 and r-lamp-2 in rats. R-lamp-2 was purified to apparent electrophoretic homogeneity from rat liver by a simple method with a protein yield of approximately 4.0 micrograms/g wet weight of liver. The purification procedure includes: preparation of tritosomal membranes, extraction of tritosomal membranes with Lubrol PX, wheat germ agglutinin (WGA)-Sepharose affinity chromatography, and monoclonal antibody-Sepharose affinity chromatography. R-lamp-2 exhibited an Mr of 96,000 on SDS-PAGE and had an acidic pI of less than 3.5. R-lamp-2 contained 52.3% carbohydrates. Its carbohydrate moieties were composed of numerous sialyl complex type N-linked oligosaccharides and small amounts of O-linked oligosaccharides. Both r-lamp-1 and r-lamp-2 were detected in all rat tissues examined by immunoblot analyses, while their apparent molecular weights differed among the tissues. Immunological quantitative analysis showed that the protein concentrations of r-lamp-2 were consistently lower than those of r-lamp-1 in all the tissues tested. There was a significant correlation with a regression coefficient of 0.86 in the tissue distribution between r-lamp-1 and r-lamp-2. A good correlation was also observed in the tissue distribution between acid phosphatase and r-lamp-2.(ABSTRACT TRUNCATED AT 250 WORDS)

    Purification, some properties, and tissue distribution of a major lysosome-associated membrane glycoprotein (r-lamp-2) of rat liver. Publishing Authors By Initials

    k akasakiK Akasaki,y yamaguchiY Yamaguchi,k furunoK Furuno,h tsujiH Tsuji,

    For similar biochemical phenomena, metabolism, and nutrition: metabolism: pharmacokinetics: tissue distribution research abstracts see: biochemical phenomena, metabolism, and nutrition: metabolism: pharmacokinetics: tissue distribution research

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    Purification, some properties, and tissue distribution of a major lysosome-associated membrane glycoprotein (r-lamp-2) of rat liver. Journal Published:

    PUBLICATION TYPE: Journal Article

    Journal: Journal of biochemistry

    VOLUME: 110

    Page Numbers: 922-7

    Journal Abbreviation: J. Biochem.

    ISSN: 0021-924X

    DAY: 19

    MONTH: Dec

    YEAR: 1991

    Purification, some properties, and tissue distribution of a major lysosome-associated membrane glycoprotein (r-lamp-2) of rat liver. Information

    Number of References:

    LANGUAGE: eng

    NlmUniqueID: 376600

    Purification, some properties, and tissue distribution of a major lysosome-associated membrane glycoprotein (r-lamp-2) of rat liver. Keywords Mesh Terms:

    KEYWORDS: Tissue Distribution

    MESH TERMS: metabolism

    Chemical & Substance for Abstract: Purification, some properties, and tissue distribution of a major lysosome-associated membrane glycoprotein (r-lamp-2) of rat liver. Information

    Substance Name: Membrane Glycoproteins

    Registry Number: 0

    Grant and Affiliation Information for Purification, some properties, and tissue distribution of a major lysosome-associated membrane glycoprotein (r-lamp-2) of rat liver.

    AFFILIATION: Faculty of Pharmacy and Pharmaceutical Sciences, Fukuyama University, Hiroshima.

    Country: JAPAN

    JAPAN Research PublicationJAPAN Research Publication

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    MEDLINETA: J Biochem

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