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Isolation and characterization of macronuclei of Paramecium caudatum infected with the macronucleus-specific bacterium Holospora obtusa.
  • M. Freiburg
  • Biology, Medicine
    Journal of cell science
  • 1 February 1985
Macronuclei from Paramecium caudatum infected with Holospora obtusa may be isolated on sucrose step gradients. Macronuclei containing primarily infectious forms can be separated from those bearing
The isolation of gamones 3 and 4 of Euplotes octocarinatus.
TLDR
Gamones 3 and 4 of the ciliate Euplotes octocarinatus were isolated and purified to chromatographic and electrophoretic homogeneity to induce cells of certain mating types to unite in pairs and exchange gametic nuclei.
Isolation and characterization of DNA-dependent RNA polymerase I of Tetrahymena pyriformis.
TLDR
A procedure for the separation and purification of DNA-dependent RNA polymerases from macronuclei of Tetrahymena pyriformis is described and the class I enzyme was identified by its resistance against alpha-amanitin and its location in nucleoli.
Functional states of RNA polymerase in the macronucleus of Tetrahymena pyriformis and their dependence on culture growth.
  • M. Freiburg
  • Biology, Medicine
    Journal of cell science
  • 1 February 1981
TLDR
The data favour the assumption that factors other than the amount of RNA polymerase I molecules available control transcription of the ribosomal genes.
Organization and Expression of the Nuclear Genome
TLDR
During the last decade enormous progress was made in the investigation of the structure of the ciliate genome, but Paramecium seems to be somewhat ousted from the centre of interest in this field of research.
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