title: The par region of pSC101 affects plasmid copy number as well as stability.
abstract: The par locus is a segment of pSC101 that has been identified as a cis-acting determinant of plasmid stability. We show that par also determines copy number and must, therefore, play a role in plasmid replication. The segregation defect, but not the copy-number reduction, of par- replication origins is completely suppressed by a short sequence from the bacteriophage lambda gene O which is present in plasmid pKO-4. Thus, replication and segregation functions are separable from each other.
authors.affiliation: Department of Molecular Biology, University of Geneva, Switzerland.
authors.forename: D
authors.initials: D
authors.lastname: Manen
authors.forename: T
authors.initials: T
authors.lastname: Goebel
authors.forename: L
authors.initials: L
authors.lastname: Caro
mesh_terms: D000668:Ampicillin Resistance / Q000235:genetics*; D001483:Base Sequence; D003001:Cloning, Molecular; D004261:DNA Replication; D004926:Escherichia coli / Q000235:genetics* / Q000254:growth & development; D007700:Kinetics; D008969:Molecular Sequence Data; D010957:Plasmids; D015183:Restriction Mapping; D012689:Sequence Homology, Nucleic Acid