SMOX and infection: Using quantitative PCR (qPCR), we tested the effects of different media (i.e., TSB plus 1% arabinose, TSB-A; LB plus 1% arabinose, LB-A; M9-A; and mammalian cell infection media plus 1% arabinose [MCIM-A]) on the expression of pmtA in WT PAO1 alone and found that the amount of pmtA expressed did not change with nutrient availability (Fig. 1A).