- Nanaerobe
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Nanaerobes are organisms that cannot grow in the presence of micromolar concentrations of oxygen, but can grow with and benefit from the presence of nanomolar concentrations of oxygen (eg Bacteroides fragilis). Like other anaerobes, these organisms do not require oxygen for growth. This growth benefit requires the expression of an oxygen respiratory chain that is typically associated with microaerophilic respiration. Recent studies suggest that respiration on low concentrations of oxygen is an ancient process which predates the emergence of oxygenic photosynthesis.
Pathogenic bacteria Bacterial disease · Coley's Toxins · Exotoxin · Lysogenic cycle
Human flora Substrate preference Oxygen preference Structures Cell wall: Peptidoglycan (NAM, NAG, DAP)
Gram-positive bacteria only: Teichoic acid · Lipoteichoic acid · Endospore
Gram-negative bacteria only: Bacterial outer membrane (Porin, Lipopolysaccharide) · Periplasmic space
Mycobacteria only: Arabinogalactan · Mycolic acidOutside envelopeCompositeShapes Categories:
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