respiration

Edge evidence

• respiration uses electron flow from electron donor

  Respiration begins with reduced electron donors.

  • DOI:10.1016/j.bbabio.2008.09.008 free energy of a redox reaction Supports respiratory energy conservation from redox reactions.
• electron donor transfers electrons to terminal electron acceptor METPO:2007403

  Electrons move from donors to terminal acceptors.

  • DOI:10.1016/j.bbabio.2008.09.008 electron transfer process Supports donor-to-acceptor electron flow in respiratory chains.
• molecular oxygen example of terminal electron acceptor rdfs:subClassOf

  Oxygen is the terminal electron acceptor in aerobic respiration.

  • DOI:10.1128/mmbr.61.4.533-616.1997 oxygen as terminal electron acceptor Supports oxygen as a respiratory terminal acceptor.
• nitrate example of terminal electron acceptor rdfs:subClassOf

  Nitrate is a representative anaerobic terminal electron acceptor.

  • DOI:10.1128/mmbr.61.4.533-616.1997 utilization of nitrate Supports nitrate use in anaerobic respiration.
• membrane electron transport chain couples electron flow to proton motive force METPO:2007602

  Respiratory chains conserve redox energy as an ion gradient.

  • DOI:10.1016/j.bbabio.2008.09.008 generation of an electrochemical ion gradient Supports ion-gradient generation by membrane electron transport.
• proton motive force regulates ATP synthase RO:0002211

  Proton motive force powers ATP synthase.

  • DOI:10.1016/j.bbabio.2008.09.008 drives ATP synthesis Supports ATP synthase as the downstream energy-conservation output.
• ATP synthase produces ATP METPO:2000202

  ATP synthase produces ATP during respiration.

  • DOI:10.1016/j.bbabio.2008.09.008 ATP synthesis Supports ATP production from respiratory energy conservation.
• respiratory Complex I (NADH:quinone oxidoreductase) contributes to proton motive force RO:0002326

  Complex I pumps protons during NADH oxidation/quinone reduction, building the proton motive force.

  • DOI:10.3390/ijms252413421 Complex I pumps four protons per pair of electrons, contributing to the formation of a proton motive force.
• anoxic microsites controls terminal electron acceptor RO:0002211

  Anoxic microsites control the local availability and ordering of terminal electron acceptors.

  • DOI:10.1021/acsearthspacechem.3c00032 Microsites control the local availability and ordering of terminal electron acceptors (O2, NO3-, Fe(III), Mn(IV), SO4 2-).
• oxygen depletion enables anaerobic respiration RO:0002327

  When O2 falls below physiological thresholds, cells shift to alternative acceptors and perform anaerobic respiration.

  • DOI:10.1021/acsearthspacechem.3c00032 When O2 falls below physiological thresholds, microorganisms shift to alternative electron acceptors and carry out anaerobic respiration.
• anaerobic respiration subtype of respiration

  Anaerobic respiration is a form of respiration distinguished by its terminal electron acceptor.

  • DOI:10.1128/mmbr.61.4.533-616.1997 Review contrasts aerobic respiration with anaerobic use of alternative acceptors.