FIG.2.

Overview of metabolism and transport in P. gingivalis. Primary substrates for energy metabolism are capitalized and underlined. End products of fermentation are highlighted by yellow boxes. Transporters are grouped by substrate specificity and indicated by color as follows: inorganic cations (green), inorganic anions (magenta), organic nutrients (yellow), and drug efflux and other (black). Arrows indicate direction of transport for substrates (and coupling ions, where appropriate).