Nucleic Acids Research, 1987, Vol. 15, No. 20 8319-8331
© 1987
Articles |
DNA synthesis is initiated at two positions within the origin of replication of plasmid R1162
Department of Microbiology, University of Texas Austin, TX 78712, USA
Received July 6, 1987. Revised September 22, 1987. Accepted September 22, 1987.
DNA synthesis of broad host-range plasmid R1162 is initiated from two positions, flanking a large (40 bp sten, 40 bp loop) inverted repeat. Each start-point is located within a highly conserved, but oppositely oriented, 10 base-pair sequence. Synthesis from the two positions converges within the intervening inverted repeat. An analysis of deletions suggests that both start positions must be present for synthesis. A model describing possible early events in replication of plasmid R1162 is presented.
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