R1 plasmid

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The R1 Plasmid is a plasmid that has been isolated from E Coli bacteria. It’s known as a “low copy” plasmid, meaning that it exists in relatively few copies in any given bacteria. Because of its low copy nature, R1 must rely on “type II” segregation system to ensure that at least one copy is contained in each daughter cell after mitosis. The R1 plasmid imparts multi-drug antibiotic resistance to its host bacteria. ^[1]