FlaJ is not required for flagellin glycosylation but is required for export.A. Motility of A. caviae wild-type, flaJ mutant, flaJ mutant harbouring pSRK flaA, and flaJ mutant harbouring pSRK_hisflaA inoculated on 0.25% semisolid bacteriological agar.B. Western blots of FlaA/B(+pse) using α-FlaA/B(+pse) antibodies of whole-cell preparations and secreted fractions of A. caviae strains (wild-type, wild-type + pSRK, wild-type + pSRK_hisflaA, maf1 mutant, flaJ mutant, flaJ mutant + pSRK, flaJ mutant + pSRK_flaA, and flaJ mutant + pSRK_hisflaA). Coomassie-stained SDS-PAGE gels showing whole-cell preparations and secreted fractions are given as a loading control. The samples were also probed with α-GroEL as a cell lysis control for secreted fractions and an additional loading control for whole-cell fractions.C. Western blots of FlaA/B(+pse) using α-FlaA/B(+pse) antibodies of whole-cell preparations and secreted fractions of A. caviae strains (wild-type, wild-type + pSRK, wild-type + pSRK_flaA-CBD), Coomassie-stained SDS-PAGE gels showing whole-cell preparations and secreted fractions are given as a loading control. The samples were also probed with α-GroEL as a cell lysis control for secreted fractions and an additional loading control for whole-cell fractions.D. Western blots of FlaA/B(+pse) using α-FlaA/B(+pse) antibodies of whole-cell (WC) preparations and secreted fractions (SN) of A. caviae wild-type and flaH mutant strains. A Coomassie-stained SDS-PAGE gel showing whole-cell preparations and secreted fractions is given as a loading control. The samples were also probed with α-GroEL as a cell lysis control for secreted fractions and an additional loading control for whole-cell fractions.