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Difference between revisions of "Ergodynamic efficiency"

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{{MitoPedia
{{MitoPedia
|abbr=''Ξ΅''
|abbr=''Ξ΅''
|description=The '''ergodynamic efficiency''', ''Ξ΅'' (compare [[thermodynamic efficiency]]), is a power ratio between the output power and the (negative) input power of an energetically coupled process. Since [[power]] [W] is the product of a [[flow]] and the conjugated thermodynamic [[force]], the ergodynamic efficiency is the product of an output/input flow ratio and the corresponding force ratio. The efficiency is 0.0 in a fully uncoupled system (zero output flow) or at level flow (zero output force). The maximum efficiency of 1.0 can be reached only in a fully (mechanistically) coupled system at the limit of zero flow at ergodynamic equilibrium. The ergodynamic efficiency of coupling between ATP production (DT phosphorylation) and oxygen consumption is the flux ratio of DT phosphorylation flux and oxygen flux (~P/O<sub>2</sub> ratio) multiplied by the corresponding force ratio. Compare with the [[OXPHOS coupling efficiency]].
|description=The '''ergodynamic efficiency''', ''Ξ΅'' (compare [[thermodynamic efficiency]]), is a power ratio between the output power and the (negative) input power of an energetically coupled process. Since [[power]] [W] is the product of a [[flow]] and the conjugated thermodynamic [[force]], the ergodynamic efficiency is the product of an output/input flow ratio and the corresponding force ratio. The efficiency is 0.0 in a fully uncoupled system (zero output flow) or at level flow (zero output force). The maximum efficiency of 1.0 can be reached only in a fully (mechanistically) coupled system at the limit of zero flow at ergodynamic equilibrium. The ergodynamic efficiency of coupling between ATP production (DT phosphorylation) and oxygen consumption is the flux ratio of DT phosphorylation flux and oxygen flux (PΒ»/O<sub>2</sub> ratio) multiplied by the corresponding force ratio. Compare with the [[OXPHOS-coupling efficiency]].
|info=[[Gnaiger 1993 Pure Appl Chem]]
|info=[[Gnaiger 1993 Pure Appl Chem]]
}}
== References ==
{{#ask:[[Additional label::Efficiency]]
| mainlabel=Bioblast link
|?Has title=Reference
|?Was published in year=Year
|format=broadtable
|limit=5000
|offset=0
|sort=Has title
|order=ascending
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{{#ask:[[Additional label::Ergodynamic efficiency]]
| mainlabel=Bioblast link
|?Has title=Reference
|?Was published in year=Year
|format=broadtable
|limit=5000
|offset=0
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{{MitoPedia concepts
{{MitoPedia concepts
|mitopedia concept=Respiratory control ratio
|mitopedia concept=MiP concept, Respiratory control ratio, Ergodynamics
}}
}}
{{MitoPedia methods
{{MitoPedia methods
|mitopedia method=Respirometry
|mitopedia method=Respirometry
}}
}}
{{MitoPedia O2k and high-resolution respirometry}}
{{MitoPedia topics}}
== References ==
* [[Gnaiger 1993 Pure Appl Chem|Gnaiger E (1993) Nonequilibrium thermodynamics of energy transformations. Pure Appl Chem 65: 1983-2002.]]
* [[Gnaiger 1993 Hypoxia|Gnaiger E (1993) Efficiency and power strategies under hypoxia. Is low efficiency at high glycolytic ATP production a paradox? In: Surviving Hypoxia: Mechanisms of Control and Adaptation. Hochachka PW, Lutz PL, Sick T, Rosenthal M, Van den Thillart G (eds) CRC Press, Boca Raton, Ann Arbor, London, Tokyo: 77-109.]]

Latest revision as of 13:36, 3 June 2020


high-resolution terminology - matching measurements at high-resolution


Ergodynamic efficiency

Description

The ergodynamic efficiency, Ξ΅ (compare thermodynamic efficiency), is a power ratio between the output power and the (negative) input power of an energetically coupled process. Since power [W] is the product of a flow and the conjugated thermodynamic force, the ergodynamic efficiency is the product of an output/input flow ratio and the corresponding force ratio. The efficiency is 0.0 in a fully uncoupled system (zero output flow) or at level flow (zero output force). The maximum efficiency of 1.0 can be reached only in a fully (mechanistically) coupled system at the limit of zero flow at ergodynamic equilibrium. The ergodynamic efficiency of coupling between ATP production (DT phosphorylation) and oxygen consumption is the flux ratio of DT phosphorylation flux and oxygen flux (PΒ»/O2 ratio) multiplied by the corresponding force ratio. Compare with the OXPHOS-coupling efficiency.

Abbreviation: Ξ΅

Reference: Gnaiger 1993 Pure Appl Chem

References

Bioblast linkReferenceYear
Gnaiger E (1993) Efficiency and power strategies under hypoxia. Is low efficiency at high glycolytic ATP production a paradox? In: Surviving hypoxia: Mechanisms of control and adaptation. Hochachka PW, Lutz PL, Sick T, Rosenthal M, Van den Thillart G (eds) CRC Press, Boca Raton, Ann Arbor, London, Tokyo:77-109.1993
Gnaiger E (1993) Nonequilibrium thermodynamics of energy transformations. Pure Appl Chem 65:1983-2002. http://dx.doi.org/10.1351/pac1993650919831993
Gnaiger E (2020) Mitochondrial pathways and respiratory control. An introduction to OXPHOS analysis. 5th ed. Bioenerg Commun 2020.2. https://doi.org/10.26124/bec:2020-00022020
Bioblast linkReferenceYear
Gnaiger E (1987) Optimum efficiencies of energy transformation in anoxic metabolism. The strategies of power and economy. In Calow P (ed) Evolutionary physiological ecology. Cambridge Univ Press:7-36.1987
Gnaiger E et al ― MitoEAGLE Task Group (2020) Mitochondrial physiology. Bioenerg Commun 2020.1. https://doi.org/10.26124/bec:2020-0001.v12020

MitoPedia concepts: MiP concept, Respiratory control ratio, Ergodynamics 


MitoPedia methods: Respirometry