Fig. 2: Phylogenetic tree illustrating the evolutionary relationship of the metagenomic luxI and luxR constructed using the maximum-likelihood method.
From: Functional metagenomic analysis of quorum sensing signaling in a nitrifying community
Phylogenetic analysis was performed by comparing the amino acid sequences of the metagenomic luxI genes (a) and metagenomic luxR genes (b) to 80 and 85 functionally verified luxI and luxR that were previously reported in the literature, as well as four luxI/R pairs obtained from Nitrospira. The luxI/R homologs verified in pure culture studies, metagenome studies, and other Nitrospira were written in black, blue, and green, respectively, while the putative luxI/R homologs identified in this study was written in red. The paired luxI/R homologs were indicated by symbols with the same shape and color.
