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- W2558241296 abstract "SUMMARY Bacterial chromosomes initiate replication at a fixed time in the cell cycle, whereas there is generally no particular time for plasmid replication initiation or chromosomal replication initiation from integrated plasmids. In bacteria with divided genomes, the replication system of one of the chromosomes typically resembles that of bacteria with undivided genomes, whereas the remaining chromosomes have plasmid-like replication systems. For example, in Vibrio cholerae , a bacterium with two chromosomes (chromosome 1 [Chr1] and Chr2), the Chr1 system resembles that of the Escherichia coli chromosome, and the Chr2 system resembles that of iteron-based plasmids. However, Chr2 still initiates replication at a fixed time in the cell cycle and thus offers an opportunity to understand the molecular basis for the difference between random and cell cycle-regulated modes of replication. Here we review studies of replication control in Chr2 and compare it to those of plasmids and chromosomes. We argue that although the Chr2 control mechanisms in many ways are reminiscent of those of plasmids, they also appear to combine more regulatory features than are found on a typical plasmid, including some that are more typical of chromosomes. One of the regulatory mechanisms is especially novel, the coordinated timing of replication initiation of Chr1 and Chr2, providing the first example of communication between chromosomes for replication initiation." @default.
- W2558241296 created "2016-12-08" @default.
- W2558241296 creator A5008361344 @default.
- W2558241296 creator A5049398380 @default.
- W2558241296 creator A5074464535 @default.
- W2558241296 creator A5090567757 @default.
- W2558241296 date "2017-03-01" @default.
- W2558241296 modified "2023-10-13" @default.
- W2558241296 title "Random versus Cell Cycle-Regulated Replication Initiation in Bacteria: Insights from Studying Vibrio cholerae Chromosome 2" @default.
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