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Organisms from all domains of life are infected by viruses. In eukaryotes, serine/threonine kinases play a central role in antiviral response. Bacteria, however, are not commonly known to use protein phosphorylation as part of their defense against phages. Here we identify Stk2, a staphylococcal serine/threonine kinase that provides efficient immunity against bacteriophages by inducing abortive infection...
Staphylococcus aureus is one of the main bacterial species of clinical importance. Its virulence is considered multifactorial and is attributed to the combined action of a variety of molecular determinants including the virulence regulator SarA. Phosphorylation of SarA was observed to occur in vivo. From this finding, SarA was overproduced and purified to homogeneity. In an in vitro assay, it was...
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