Fig. 2
From: Exploring AI-2-mediated interspecies communications within rumen microbial communities
Occurrence of putative AI-2 synthase and receptor-based QS in rumen bacterial genomes. a Occurrence of the putative LuxS synthases, LsrB, and CahR-type receptors. Numbers indicate the numbers of bacterial genomes in which the corresponding proteins were found. Putative LuxS synthases, LuxP receptors, LsrB receptors, and CahR-type receptors were observed in 558, 0, 44, 292 rumen bacterial genomes, respectively. b The dCache_1 domains from the CahR-type AI-2 receptors predicted to function as MCPs, HKs, GCDs, and SPs in rumen bacteria are capable of retaining AI-2. c Model of the conservation of the dCache_1 domain. Sequence logo of a multiple sequence alignment of 638 putative dCache_1 domain sequences of CahR-type AI-2 receptors with the five conserved positions (R126, W128, Y144, D146, and D173) of P. aeruginosa PctA in rumen microbes. Multiple alignment analysis was performed with ClustalW in MEGA X. The logo was visualized with WebLogo 3