单词	episome
释义	episome /ˈɛpɪsəʊm / noun Microbiology A genetic element inside some bacterial cells, especially the DNA of some bacteriophages, that can replicate independently of the host and also in association with a chromosome with which it becomes integrated. Compare with plasmid.Interestingly, overexpression of the functional wild-type HA-Mcm7p from an episome or an integrated allele was toxic for normal cell growth and viability.... This attribute does not appear to be a feature of other independently isolated episomes, including episomes that cover the same portion of the E. coli chromosome that is included in F'128. During latent infection, the viral genome persists as an episome, and viral gene expression is highly restricted.
随便看	Petronas Towers petronel Petronella Petronian Petronian Law Petronius, Gaius Petropavlovsk petrophysical petrophysicist petrophysics petrosal petroselinum petrosilex petrotectonic petrotectonics petrous Petrozavodsk pe tsai Petsamo pets' cemetery pets' corner pet shop pet-sit pet-sitter pet-sitting

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