The inner membrane transporter component of a constitutive organic solvent efflux system. Involved in export of toluene, styrene, m-xylene, propylbenzene and ethylbenzene. Also exports AMP and the antibiotics carbenicillin, nalidixic acid, chloramphenicol and tetracycline. The ttgABC operon is repressed by toluene; this is mediated by TtgR. The ttgABC operon is induced in response to chloramphenicol and tetracycline. Belongs to the resistance-nodulation-cell division (RND) (TC 2.A.6) family. There are 4 nearly identical operons in various strains of P.putida. This one and the mepABC operon of strain KT2442-TOL function in solvent and antibiotic efflux; however the arpABC operon of strain S12 functions only in antibiotic efflux. This may be due to different protein expression levels. In strain KT2440 the equivalent operon does not seem to function in toluene efflux.