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. 2020 Sep 22;3:523. doi: 10.1038/s42003-020-01253-0

Fig. 3. Mating Pair Stabilization (MPS) is essential for in situ conjugation.

Fig. 3

a TP114 annotated map (top panel) and transposon insertions sites (lower panel) obtained from different high-density transposon mutagenesis (HDTM) mutant libraries. Gene essentiality is highlighted in yellow boxes for plasmid maintenance, blue boxes for in vitro transfer and red boxes for in situ transfer and summarized in the “Essentiality” track (track 1 to 3 n = 3, biologically independent samples, track 4 to 7 n = 6, biologically independent mice). b The role of the type IV pilus major pilin subunit gene (pilS) in MPS was confirmed in vitro by conjugation in stable (solid) and unstable (liquid) conditions (n = 3, biologically independent samples). Error bars show standard deviation of the mean from at least 3 biological replicates, which are shown on graph as white circles. c TP114ΔpilS mutant in situ transfer was followed for 4 days in feces then (d) compared with efficiencies from the caecum (n = 5, biologically independent mice).