Use an O2-dependent system to generate ATP.
Examples include Nocardia, Pseudomonas aeruginosa, Mycobacterium tuberculosis, and Bacillus.
Reactivation of M. tuberculosis (e.g., after immune compromise or TNF-a inhibitor use) has a predilection for the apices of the lung, which have the highest Po2 .
Nagging Pests Must Breathe .
P. aeruginosa is anaerobe seen in burn wounds, complications of diabetes, nosocomial pneumonia, and pneumonias in cystic fibrosis
Pseudomonas aeruginosa may use some nitrogen-containing compounds (e.g., nitrates) as terminal electron acceptors for anaerobic metabolism in environments with low or absent oxygen.