Open AccessEukaryotic DNA segments capable of autonomous replication in yeast.
Author(s) -
Dan T. Stinchcomb,
Marjorie Thomas,
Jeffrey D. Kelly,
Eric U. Selker,
Ronald W. Davis
Publication year - 1980
Publication title -
proceedings of the national academy of sciences of the united states of america
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.011
H-Index - 771
eISSN - 1091-6490
pISSN - 0027-8424
DOI - 10.1073/pnas.77.8.4559
Subject(s) - biology , autonomously replicating sequence , ura3 , dna replication , eukaryotic dna replication , control of chromosome duplication , origin of replication , saccharomyces cerevisiae , origin recognition complex , genetics , in vitro recombination , schizosaccharomyces pombe , dna , plasmid , yeast , gene , molecular cloning , complementary dna
A selective scheme is presented for isolating sequences capable of replicating autonomously in the yeast Saccharomyces cerevisiae. YIp5, a vector that contains the yeast gene ura3, does not transform a ura3 deletion mutant to Ura+. Hybrid YIp5-Escherichia coli DNA molecules also fail to produce transformants. However, collections of molecular hybrids between YIp5 and DNA from any of six eukaryotes tested (S. cerevisiae, Neurospora crassa, Dictyostelium discoideum Ceanhorabditis elegans, Drosophila melanogaster, and Zea mays) do transform the deletion mutant. The Ura+ transformants grow slowly, are unstable under nonselective conditions, and carry the transforming DNA as autonomously replicating, supercoiled circular molecules. Such a phenotype is qualitatively identical to that of strains transformed by molecules containing a yeast chromosomal origin of replication. Thus, these DNA hybrid molecules may contain eukaryotic origins of replication. The isolated sequences may be useful in determiing the signals controlling DNA replication in yeast and in studying both DNA replication and transformation in other eukaryotic organisms.