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Distribution of newly synthesized DT-diaphorase in rat liver

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Bioscience Reports

Abstract

The distribution, synthesis transport, and glycosylation of rat-liver DT-diaphorase has been investigated. The enzyme could be isolated using specific antibodies, mainly from the soluble supernatant but also from microsomal vesicles, Golgi membrane, and mitochondria. 40% of the microsomal enzyme was located in the lumen or on the interior side of the membrane, the rest remaining as an integral non-extractable part of the membrane. Synthesis of DT-diaphorase takes place on both free and bound ribosomes, although it was found to be transported in a sequential manner from the rough to the smooth endoplasmic reticulum and also subsequently to the mitochondria. The rough and smooth microsomal DT-diaphorase contains covalently bound carbohydrate, but no sugar moiety could be detected bound to the cytoplasmic form of the enzyme.

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Authors and Affiliations

  1. Department of Biochemistry, Arrhenius Laboratory, University of Stockholm, S-106 91, Stockholm

    C. Edlund, Å. Elhammer & G. Dallner

  2. Department of Pathology, Huddinge Hospital, Karolinska Institutet, Stockholm, Sweden

    G. Dallner

Authors
  1. C. Edlund
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  2. Å. Elhammer
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  3. G. Dallner
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Edlund, C., Elhammer, Å. & Dallner, G. Distribution of newly synthesized DT-diaphorase in rat liver. Biosci Rep 2, 861–865 (1982). https://doi.org/10.1007/BF01114891

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  • DOI: https://doi.org/10.1007/BF01114891

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