Complementation of the growth defect of the YidC-depleted strain E. coli FTL10 by B. subtilis SpoIIIJ and YqjG. Cells were grown on LB plates containing 100 μg/ml ampicillin and either 0.2% (wt/vol) glucose or 0.2% (wt/vol) arabinose. Cells containing pTrc99A (negative control) (section 1), pTrcyidC (positive control) (section 2), pTrcspoIIIJ (section 3), pTrcspoIIIJHis (section 4), pTrcyqjG (section 5), and pTrcyqjGHis (section 6) were grown under repression (glucose) and induction (arabinose) conditions.