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Balbiani ring nucleotide sequences in cytoplasmic 75 S RNA of Chironomus tentans salivary gland cells

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Abstract

The giant puffs, the Balbiani rings (BR) 1 and 2 of Chironomus tentans polytene chromosomes synthesize large RNA molecules sedimenting at about 75S. An RNA fraction of approximately the same size is present in nuclear sap and cytoplasm. In situ hybridization of cytoplasmic 75S RNA and other electrophoretically defined cytoplasmic RNA fractions showed BR RNA to be confined to the 75S RNA, and absent in other high molecular-weight cytoplasmic RNA fractions, which indiates that BR RNA is transferred from the nucleus into the cytoplasm without an appreciable size reduction.

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Authors and Affiliations

  1. Dept. of Histology, Karolinska Institutet, S-104 01, Stockholm 60, Sweden

    B. Lambert & J. -E. Edström

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  1. B. Lambert
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  2. J. -E. Edström
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Lambert, B., Edström, J.E. Balbiani ring nucleotide sequences in cytoplasmic 75 S RNA of Chironomus tentans salivary gland cells. Molecular Biology Reports 1, 457–464 (1974). https://doi.org/10.1007/BF00360672

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  • DOI: https://doi.org/10.1007/BF00360672

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