Figure 3
Changes of gene transcription related to the electron transport machinery. A. Model of P. putida KT2440 electron transport chain, adapted from [116]. Electrons are delivered from different electron donors to the ubiquinones located in the cell membrane (UQ). They are then transferred to the terminal ubiquinol oxidases CIO or Cyo, or are directed to the bc1 complex. In the latter case, electrons are fed to the terminal oxidases Aa3, Cbb3-1, or Cbb3-2 via cytochromes. The Cyo oxidase as well as the global regulators Anr and Crc are believed to modulate the expression of some of the terminal oxidase genes (dotted lines, see the text for the details). B. Genes coding for the five terminal oxidases and for their proposed regulators whose expression was up-regulated (+) or down-regulated (-) in the Pressure condition. C. Same as panel B but for the Pressure Oxygen condition.