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© Research
Publication : Microbiology spectrum

Resolution of Multimeric Forms of Circular Plasmids and Chromosomes

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Microbiology spectrum - 01 Oct 2014

Crozat E, Fournes F, Cornet F, Hallet B, Rousseau P

Link to Pubmed [PMID] – 26104344

Microbiol Spectr 2014 Oct;2(5)

One of the disadvantages of circular plasmids and chromosomes is their high sensitivity to rearrangements caused by homologous recombination. Odd numbers of crossing-over occurring during or after replication of a circular replicon result in the formation of a dimeric molecule in which the two copies of the replicon are fused. If they are not converted back to monomers, the dimers of replicons may fail to correctly segregate at the time of cell division. Resolution of multimeric forms of circular plasmids and chromosomes is mediated by site-specific recombination, and the enzymes that catalyze this type of reaction fall into two families of proteins: the serine and tyrosine recombinase families. Here we give an overview of the variety of site-specific resolution systems found on circular plasmids and chromosomes.

https://www.ncbi.nlm.nih.gov/pubmed/26104344