title: How do bacteria avoid high oxygen concentrations?
abstract: Bacteria, such as Escherichia coli and Azospirillum brasilense, avoid microenvironments with elevated oxygen concentrations, not by sensing reactive oxygen derivatives, but by sensing a metabolic down-shift that results from elevated oxygen levels. A novel protein, Aer, and the chemotaxis serine receptor, Tsr, have recently been identified as transducers for aerotaxis which monitor internal energy levels in the bacteria.
authors.affiliation: Department of Microbiology and Molecular Genetics, School of Medicine, Loma Linda University, California 92350, USA.
authors.forename: I B
authors.initials: IB
authors.lastname: Zhulin
authors.forename: M S
authors.initials: MS
authors.lastname: Johnson
authors.forename: B L
authors.initials: BL
authors.lastname: Taylor
mesh_terms: D018407:Bacterial Physiological Phenomena; D001692:Biological Transport; D002633:Chemotaxis; D004583:Electrons; D008954:Models, Biological; D010100:Oxygen / Q000378:metabolism*; D011522:Protons; D017382:Reactive Oxygen Species / Q000378:metabolism; D015398:Signal Transduction
chemical_list: D011522:Protons; D017382:Reactive Oxygen Species; D010100:Oxygen