Results 151 to 160 of about 32,743 (214)

The Genetics of Paramecium Aurelia

AIBS Bulletin, 1955
G. Beale
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Myoglobin from the ciliate protozoan Paramecium aurelia

Comparative Biochemistry and Physiology Part B: Comparative Biochemistry, 1976
Abstract 1. 1. The respiratory pigment isolated from cell extracts of the protozoan Paramecium aurelia (referred to as myoglobin) was partially purified and resolved into five electrophoretically distinct components (Mb1–Mb5). 2. 2. The separated components appear to have identical mol. wt of approx 16,000. 3. 3.
R H, Davis, E, Steers
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Methylated bases in DNA from Paramecium aurelia

Biochimica et Biophysica Acta (BBA) - Nucleic Acids and Protein Synthesis, 1974
Abstract The amount of methylated bases in the DNA from the macronuclei, micronuclei and mitochondria of Paramecium aurelia was investigated. It was found that macro- and micronuclear DNA contained about 2.5 molepercent 6 N- methyladenine and no 5-methylcytosine.
D J, Cummings, A, Tait, J M, Goddard
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Anatomy of mitochondrial DNA from Paramecium aurelia

Molecular and General Genetics MGG, 1980
The linear genome of mitochondrial DNA from four species of Paramecium aurelia was investigated with respect to restriction endonuclease fragments, location and number of ribosomal RNA genes, and interspecies EcoRI and HindIII fragment homologies. One copy of each of the rRNA genes was found in all four species and the 14s and 20s rRNA genes were ...
D J, Cummings, R A, Maki, P J, Conlon, J, Laping   +3 more
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Transfer RNA methyltransferase activity in Paramecium aurelia

Biochimica et Biophysica Acta (BBA) - Nucleic Acids and Protein Synthesis, 1976
The tRNA methyltransferases from Paramecium aurelia were investigated. The effects of varying the Mg2+ and NH4+ concentrations, pH, and temperature on the methylation of Escherichia coli B tRNA using extracts from P. aurelia were determined. Optimum tRNA methyltransferase activity was observed at pH 7.8 and 37 degrees C.
R A, Maki, J L, Brown, D J, Cummings
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Mitochondrial Genetics of Paramecium aurelia

1981
Publisher Summary This chapter discusses the mitochondrial genetics of Paramecium aurelia (P. aurelia). There are substantial differences among the mitochondrial genetic systems of the ciliate protozoa and corresponding systems in yeast and other groups.
G.H. Beale, A. Tait
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Interspecies transfer of mitochondria in Paramecium aurelia

Molecular and General Genetics MGG, 1976
Erythromycin-resistant mitochondria from species 1, 5 and 7 of P. aurelia were injected into erythromycin-sensitive paramecia of each of the same three species. Mitochondria from species 1 and 5 were successfully transferred to all three species, but species 7 mitochondria failed to develop in species 1 and 5.
G H, Beale, J K, Knowles
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Studies on macronuclear DNA from Paramecium aurelia

Chromosoma, 1975
Macronuclear DNA was isolated from purified macronuclei of Paramecium aurelia and the size distribution was determined with regard to growth phase and method of extraction. DNA molecules as long as 105 microns and as short as 0.2 microns were observed. It was concluded that the method of extraction affected the observed length of DNA extracted and that
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Vitally stained kappa in Paramecium aurelia

Journal of Experimental Zoology, 1965
AbstractPurified kappa particles stained with methylene blue were placed into fluid containing paramecia. The vitally stained kappa quickly aggregated in food vacuoles of both sensitive and killer animals. A few filamentous projections were observed protruding into the cytoplasm from vacuoles containing kappa.
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Differential genic activity in Paramecium aurelia

Journal of Experimental Zoology, 1967
AbstractAn autoradiographic analysis of macromolecular syntheses in the micronucleus of Paramecium aurelia was undertaken to discover whether the micronucleus was completely inert. There is a distinctive temporal ordering of micronuclear macromolecular synthesis during the fission cycle.
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