The Purification of DNA from the Genomes of Paramecium aurelia and Tetrahymena pyriformis 1
dc.contributor.author | Allen, Sally Lyman | en_US |
dc.contributor.author | Gibson, Ian | en_US |
dc.date.accessioned | 2010-06-01T18:58:42Z | |
dc.date.available | 2010-06-01T18:58:42Z | |
dc.date.issued | 1971-08 | en_US |
dc.identifier.citation | ALLEN, SALLY LYMAN; GIBSON, IAN (1971). "The Purification of DNA from the Genomes of Paramecium aurelia and Tetrahymena pyriformis 1 ." Journal of Eukaryotic Microbiology 18(3): 518-525. <http://hdl.handle.net/2027.42/72169> | en_US |
dc.identifier.issn | 1066-5234 | en_US |
dc.identifier.issn | 1550-7408 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/72169 | |
dc.description.abstract | Methods are described for the recovery of highly purified DNA from Paramecium aurelia and Tetrahymena pyriformis in high yields. Our DNA is only slightly contaminated with RNA and carbohydrate, and little or no protein can be detected. We could not reduce the RNA (orcinol-positive material) by further treatment (sephadex or hydroxyapatite chromatography and preparative CsCl gradients). At the extreme our DNA is contaminated with 15–20% RNA but the real value is most likely considerably lower than this. The DNA we have prepared from Paramecium and Tetrahymena shows all the properties of double-stranded, high molecular weight DNA when characterized by temperature melting, CsCl density gradient centrifugation and hydroxyapatite and sephadex chromatography. When denatured, it absorbs to nitrocellulose filters. The 2 major results of importance from our work reported here are: (1) There is similarity in base composition of DNA from different syngens of Paramecium (28% G+C for syngens 1, 2, 4, 5, and 9 and 29–30% G+C for syngen 8) while there is variation between the syngens of Tetrahymena (24–31% G+C for syngens 1, 4, 7, 10, 11, and 12); (2) the density of any Paramecium DNA varies depending upon whether the cells are grown in the presence of bacteria or in axenic medium. Our results are compatible with observations previously reported for Tetrahymena but contradict those made for Paramecium . The earlier reports of differences in base composition between syngens of Paramecium are probably due in large part to the use of stocks grown on bacteria. | en_US |
dc.format.extent | 897772 bytes | |
dc.format.extent | 3109 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.publisher | Blackwell Publishing Ltd | en_US |
dc.rights | 1971 by the Society of Protozoologists | en_US |
dc.title | The Purification of DNA from the Genomes of Paramecium aurelia and Tetrahymena pyriformis 1 | en_US |
dc.type | Article | en_US |
dc.subject.hlbsecondlevel | Biological Chemistry | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Depts. of Botany and Zoology, Univ. of Michigan, Ann Arbor, Mich. 48104, U.S.A. and School of Biological Sciences, Univ. of East Anglia, Norwich, England | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/72169/1/j.1550-7408.1971.tb03366.x.pdf | |
dc.identifier.doi | 10.1111/j.1550-7408.1971.tb03366.x | en_US |
dc.identifier.source | Journal of Eukaryotic Microbiology | en_US |
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dc.owningcollname | Interdisciplinary and Peer-Reviewed |
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