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Deletion of difA from the cheW7-1 pilA double mutant increases EPS production to wild-type levels. EPS production was analysed using the liquid Trypan blue binding assay (see Methods). Values for all strains were normalized to the wild-type. Strains: DK1622 (wild-type); YZ601 (ΔdifA); DK10407 (pilA); YZ648 (ΔdifA pilA); YZ101 (ΔdifA cheW7-1); YZ647 (ΔdifA cheW7-1 pilA).
