FIG 6 .

Activity of chimeras with longer linkers. (A) Sequences of the X linkers of chimeric variants. The species from which the sequences originated were Treponema primitia (accession no. WP_015709136; Δ70A), Citrobacter sp. strain MGH104 (accession no. WP_048232642; Δ70B), and Butyrivibrio sp. strain VCB2001 (accession no. WP_081669071; Δ70C). The “a” and “d” positions of the two coiled-coil registers (Reg P and Reg K) are indicated below the alignment. (B and C) The activities of the BvgS_chim variants were determined using the ptx-lacZ (B) and fhaB-lacZ (C) reporters. The means and standard errors of the means are indicated.