Do plasmids work in bacteria?

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xEnOnn
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Do plasmids work in bacteria?

Post by xEnOnn » Tue Nov 23, 2010 5:24 am

If plasmids inside a bacteria are just non-essential rings of DNA, does that mean that the DNA on the plasmids do not do any effect to the bateria? In other words, the DNA on the plasmids of a bacteria is not read/transcribed/translated?

If this is so, why would a recombinant plasmid with antibiotic resistance work in a bacteria against an environment with antibiotic?

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JackBean
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Post by JackBean » Tue Nov 23, 2010 5:54 am

no, you understand wrong the word non-essential. That means, they are not 100% for normal living (i.e. the bacteria is able to grow in standard enviroment), however, the plasmids can cotain some special genes like for resistance to antibiotics, which is of course needed only, when ATBs are present. Of course, if it wasn't expressed, it would not work ;)
http://www.biolib.cz/en/main/

Cis or trans? That's what matters.

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