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episome

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episome /ep·i·some/ (-sōm) in bacterial genetics, any accessory extrachromosomal replicating genetic element that can exist either autonomously or integrated with the chromosome.
ep·i·some (p-sm)
n.
A genetic particle within certain cells, especially bacterial cells, that can exist either autonomously in the cytoplasm or as part of a chromosome.

episome
[ep′isōm]
Etymology: Gk, epi + soma, body
an extrachromosomal replicating unit that exists autonomously or functions with a chromosome. See also colicinogen, conjugon, F factor, plasmid, R factor.

episome [ep´ĭ-sōm″]
in bacterial genetics, any accessory extrachromosomal replicating genetic element that can exist either autonomously or integrated with the chromosome.

episome
any accessory extrachromosomal replicating genetic element that can exist either autonomously or integrated with the chromosome. See also plasmid.


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EBV can enter into a latent phase of replication, during which the genome persists as a circular episome in the cell nucleus, with only minimal activity of select viral genes.
Whenever an infected cell divides, the episome makes a copy of itself, and each daughter cell receives one.
The circular episome, located in the cellular envelope protein, is responsible for viral attachment to the host cell.
 
 
 
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