Bacterial Kinases at the Crossroads of Stress Response, Antibiotic Resistance/Tolerance, and Phage Defense
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Protein kinases and phosphatases are essential for post-translational regulation, enabling bacteria to adapt to environmental stresses and modulate virulence. While prior reviews have broadly covered their roles in stress response, antibiotic resistance, and virulence, this article updates specifically on the roles of histidine kinases (HKs) and serine/threonine kinases (STKs) in mediating phage-bacteria interactions. A key aspect is phage-encoded kinases, which hijack bacterial signalling by phosphorylating and disrupting host processes to promote infection. Despite their importance, significant gaps remain in understanding these regulatory networks. This microreview highlights both the unresolved mechanisms and the therapeutic potential of targeting kinase pathways—for instance, by disrupting phage evasion strategies or enhancing phage-based antimicrobial therapies.