Extended Data Fig. 7: X-T4SS-lacking strains possess T4E-T4I pairs.
From: Functional replacement of ancestral antibacterial secretion system in a bacterial plant pathogen

Comparison of candidate X-T4SS effector-immunity pairs across strains possessing either X-T4SS, T6SS-i4, or none of them. The asterisk indicates an in-frame STOP codon.