Subcellular fractionation evidence for a putative peroxisome-mitochondrion attachment in the liver of normal and genetically obese (ob/oband db/db) mice

V.M. Mann, V.U. Nwosu, A. Silcox, Carolyn Jones, K. Burdett, M.J. Connock

    Research output: Contribution to journalArticlepeer-review

    Abstract

    1. 1. Liver post-nuclear supernatants (PNS) from several mouse strains were fractionated by zonal centrifugation and fractions analysed by marker-enzyme estimations + electron microscopy. 2. 2. Rate-dependent banding of PNS yielded peroxisome-enriched (PER) and mitochondrion-enriched (MER) regions. 3. 3. Density-dependent banding of PER yielded peroxisomes (≈1.22 g/ml) well separated from mitochondria (≈1.8 g/ml). 4. 4. Density-dependent banding of MER yielded peroxisomes that co-distributed with mitochondria and electron microscopy revealed close proximity of the two organelles. 5. 5. Experiments demonstrated that co-distribution was not due to weak binding of proteins or to agglutination of organelles. 6. 6. The results indicate in vivo attachment of some mitochondria and peroxisomes. © 1992.
    Original languageUndefined
    Pages (from-to)551-559
    Number of pages9
    JournalComparative Biochemistry and Physiology -- Part B: Biochemistry and
    Volume102
    Issue number3
    DOIs
    Publication statusPublished - 1992

    Keywords

    • animal model
    • animal tissue
    • article
    • cell fractionation
    • centrifugation
    • electron microscopy
    • genetic disorder
    • liver
    • mitochondrion
    • mouse
    • nonhuman
    • obesity
    • peroxisome
    • priority journal, Animal
    • Biological Markers
    • Cell Fractionation
    • Centrifugation, Density Gradient
    • Female
    • Liver
    • Male
    • Mice
    • Mice, Obese
    • Microbodies
    • Microscopy, Electron
    • Mitochondria, Liver, Animalia

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