Summary
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1.
an extrachromosomal, extramitochondrial DNA circle of about 3 μm length, occurring in S. pombe, was cloned in pBR322 and a detailed restriction map of the cloned sequence constructed.
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2.
Hybridization of this DNA with the ribosomal DNA from S. cerevisiae revealed regions of homology which were mapped in the cloned S. pombe DNA.
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3.
A transformation system was developed using the URA3 gene of S. cerevisiae and the 3 μm molecule. It was shown that the r-DNA part of the hybrid plasmid promotes replication in S. pombe.
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Abbreviations
- kbp:
-
kilo base pairs
- rDNA (RNA):
-
ribosomal DNA (RNA)
- mitDNA:
-
mitochondrial DNA
- PMSF:
-
phenylmethyl-sulfonide fluoride
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Fournier, P., Gaillardin, C., de Louvencourt, L. et al. r-DNA plasmid from Schizosaccharomyces pombe: Cloning and use in yeast transformation. Curr Genet 6, 31–38 (1982). https://doi.org/10.1007/BF00397639
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DOI: https://doi.org/10.1007/BF00397639