Method of isolation of cysteine constitutive mutants of the cysteine regulon in Salmonella typhimurium. |
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Authors: | L. Del Gjudice K. Wolf P. Sassone-Corsi C. Alvino |
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Affiliation: | (1) C.N.R., International Institute of Genetics and Biophysics, via G. Marconi 10, Naples, (Italy);(2) Genetisches Institut der Universität München, BRD |
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Abstract: | Summary Size and shape of mitochondrial DNA molecules of Schizosaccharomyces pombe were analyzed by electron microscopy. Besides numerous linear molecules, circular molecules ranging from 0.83 m to 12.81 m were found. Depending on the method of preparation, both closed and open circular molecules were found. Most of the circular molecules could be assigned to five major size classes of 0.83±0.05 m, 1.7±0.05 m, 4.74±0.04 m, 5.74±0.04 m, and 8.32±0.07 m. Possible explanations for the different size classes of mitochondrial DNA molecules are discussed. |
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