BIOL 2070 Chapter 6: Microbiology Topic 6 Part 2
7 Feb 2017
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Bacterial (cid:498)immune system(cid:499) and revolutionary gene editing tool. Plasmids (cid:523)an other mobile elements(cid:524) considered (cid:498)selfish genetic elements(cid:499) While hgt can occasionally provide adaptive genes to bacteria, foreign dna is often not beneficial to recipient. It can often be tempting to think of hgt as being adaptive in bacteria. While it can be in some situations, much of the time foreign dna may not provide a benefit and may often be detrimental to the recipient. Restriction-modification systems: bacteria use restriction enzymes to cleave foreign. Dna, and modification enzymes (e. g. methyltransferases) to distinguish their own. Restriction enzymes cut at specific sites, typically within palindromes. Bacteria are at risk of infection by bacteriophages, which is one way that foreign. As bacteria are single-celled, they are not capable of the types of immune response systems in plants and animals; however they do have some adaptations that protect them. A common one is restriction modification system.
