Anaerobic respiration

Edge evidence

• denitrification occurs in anaerobic or microaerophilic condition biolink:occurs_in

  Denitrification can occur under anaerobic and microaerophilic conditions.

  • DOI:10.1128/mmbr.61.4.533-616.1997 under anaerobic, microaerophilic, and occasionally aerobic conditions Supports low-oxygen context for denitrification.
• nitrogen oxides acts as terminal electron acceptor

  Nitrogen oxides serve as terminal electron acceptors.

  • DOI:10.1128/mmbr.61.4.533-616.1997 N oxides as terminal electron acceptors Supports the terminal electron acceptor role.
• denitrification uses nitrogen oxides

  Denitrification uses nitrogen oxides in respiratory bioenergetics.

  • DOI:10.1128/mmbr.61.4.533-616.1997 making use of N oxides Supports nitrogen oxides as denitrification substrates.
• denitrification conserves cellular energy conservation

  Denitrification is a respiratory route for energy conservation.

  • DOI:10.1128/mmbr.61.4.533-616.1997 distinct means of energy conservation Supports energy conservation via denitrification.
• Anaerobic respiration exemplified by denitrification

  Denitrification is a representative anaerobic respiratory process.

  • DOI:10.1128/mmbr.61.4.533-616.1997 terminal electron acceptors for cellular bioenergetics Supports denitrification as non-oxygen respiratory bioenergetics.
• oxygen limitation / anoxic transition increases activity of denitrification reductases

  Onset of anoxia drives early transcription and activity of denitrification reductases.

  • DOI:10.1038/s41467-024-51688-w early transcription of NAR (and sometimes NOS) at the cusp of anoxia; environmental driver activating denitrification reductases.
• respiratory nitrate reductase (NarGHI) catalyzes reduction of nitrate

  Respiratory nitrate reductase NarGHI catalyzes the reduction of nitrate to nitrite.

  • DOI:10.1128/msystems.00967-23 the narGHI nitrate reductase cluster; NarGHI catalyzes nitrate reduction to nitrite, the canonical first step of nitrate respiration.
• respiratory nitrate reductase (NarGHI) produces nitrite METPO:2000202

  Reduction of nitrate by NarGHI yields nitrite.

  • DOI:10.1128/msystems.00967-23 NarGHI nitrate reductase produces nitrite from nitrate.
• nitrous oxide reductase (NosZ) reduces nitrous oxide METPO:2000017

  NosZ reduces nitrous oxide to dinitrogen, the terminal step of complete denitrification.

  • DOI:10.1128/msystems.00967-23 NosZ reduces N2O to N2; canonical terminal denitrification step.
• nitrous oxide reductase (NosZ) produces dinitrogen METPO:2000202

  NosZ-catalyzed reduction of nitrous oxide produces dinitrogen.

  • DOI:10.1128/msystems.00967-23 NosZ reduces N2O to N2; produces dinitrogen as denitrification end product.