Capsular polysaccharides of Acinetobacter baumannii regulate type VI secretion system activity, balancing self-protection with interbacterial competitiveness.

12 new class IIb microcins have been structurally identified, phylogenetically assessed, and functionally tested for their antimicrobial activity, increasing the total number of these bacteriocins to 17.

Genes for adhesion, interbacterial competition, and secondary metabolite production are important colonization factors of the honey bee gut symbiont Frischella perrara and are regulated by the conserved histone-like DNA-binding protein integration host factor.

Salmonella antibacterial effectors act on Y-shaped DNA substrates resembling replication forks or transcription bubbles and lead to DNA double-strand breaks.

A horizontally shared type VI secretion system affects the interaction between vibrios and eukaryotic hosts.

Distinct surfaces of an interbacterial competition cell wall toxin mediate interactions with different cellular binding partners, resulting in an inherent evolutionary trade-off across the toxin superfamily.

Pseudomonas aeruginosa defends against interbacterial antagonism through the coordinated expression of previously uncharacterized pathways that grant threat-specific protection.