Abstract:Cells are continuously facing the risk of taking up foreign DNA that can compromise genomic and cellular integrity. Therefore, bacteria are in a constant arms race with mobile genetic elements such as phages, transposons and plasmids. They have developed several active strategies against invading DNA molecules that can be seen as a bacterial innate immune system. Anti-phage systems are usually organized in defense islands and can consist of restriction-modification (R-M) systems, CRISPR-Cas, and abortive infec… Show more
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