Figure 4.

Characterization of the fad-I complement of F. nucleatum ssp. nucleatum. (A) Quantitative coaggregation of the mutant derivatives of wild-type ATCC 23726 (WT), Fnn_Δfad-I, and Fnn_Δfad-I/pBS5 with S. gordonii is shown as percentage coaggregation. (B) Transcriptional levels of radD in the Fnn_Δfad-I mutant and the Fnn_Δfad-I/pBS5 complement along with a vector only control WT/pHS58 are shown as fold change in comparison to the wild-type parent ATCC 23726. All data are presented as the mean and standard error of mean of three independent experiments (** represents p ≤ 0.01).