The mesokaryote Gyrodinium cohnii lacks nucleosomes |
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Authors: | S Bodansky L B Mintz D S Holmes |
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Institution: | Department of Biological Sciences State University of New York at Albany Albany, New York 12222 USA |
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Abstract: | The dinoflagellate has a distinct nuclear membrane but apparently lacks histones associated with its chromatin. Approximately 13% of the nuclear DNA is rapidly digested by micrococcal nuclease to acid soluble fragments and not to nucleosomal sized fragments as in the typical eukaryote. Moreover in the electron microscope the chromatin of appears as a thin filament of 40–60 Å in width without regularly spaced nucleosomes. These observations support the view that the dinoflagellates exhibit characteristics of both prokaryotes and eukaryotes. |
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Keywords: | EDTA ethylenediaminetetraacetic acid PMSF phenymethylsulfonyl fluoride TCA tricarboxylic acid |
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