Reference: Saavedra RA and Huberman JA (1986) Both DNA topoisomerases I and II relax 2 micron plasmid DNA in living yeast cells. Cell 45(1):65-70

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Abstract


Measurements at various temperatures of the linking number of yeast 2 microns plasmid DNA in wild-type cells and in cells bearing mutations in the DNA topoisomerase I and II genes show that bulk 2 microns plasmid minichromosome are maintained in a relaxed state by the combined action of topoisomerases I and II. Bulk 2 microns minichromosomes are not under torsional stress in vivo and are not substrates for a putative gyrase-like topoisomerase.

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Journal Article | Research Support, Non-U.S. Gov't | Research Support, U.S. Gov't, P.H.S.
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Saavedra RA, Huberman JA
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