Episome
A genetic element that can exist either as an autonomous replicating plasmid or can insert into the bacterial chromosome. This is an old term that is rarely used anymore.
episome
A plasmid capable of integrating into the bacterial chromosome.
epistasis ...
[edit] Episomes
An episome is a plasmid that can be added, without integration, to the chromosomal DNA of the host organism (Fig. 3).
Episome
The term introduced by Jacob and Wollman (1958b) for a particle which may at some time exist attached to and apparently integrated with the hereditary material of a cell, and which may at other times occur free from such attachment.
Episomes
- Genetic elements (DNA molecule) that may exist either as an integral part of the host chromosome or as independentky replicating DNA molecule (plasmid) free of the host chromosome
Ethidium bromide ...
An episome is a plasmid incorporated in the bacterial chromosome. Plasmids are self-replicating in a manner like the bacterial chromosome. Many plasmids have been recognized for E.
1 The UNCCH laboratory has developed the HAEC system to establish large DNA fragments as episomes in human cells, using the latent replication elements from the human herpes Epstein-Barr virus (EBV).
coli strain that is lac Z met bio and carrying an F' episome with the plac O lac Z DNA sequence on the episome, and cultured for several hours.
F Factor (Fertility Factor): Transmissible plasmid (episome) in bacteria (such as E. coli) that acts as a sex factor. It is a circular DNA about 94 kb long. Conjugation and chromosomal gene transfer occur from F+ (male) to F- (female) bacterium.
Viruses and virus like particles called episomes are responsible for transferring antibiotic resistance from one bacterium to another.
 See also: Cells, DNA, Bacteria, Trans, Gene
  
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