E-R control efficiency: Difference between revisions
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|mitopedia | |mitopedia concept=Respiratory control ratio | ||
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== Compare == | == Compare == | ||
:::ยป [[ROUTINE control ratio]], ''R/E'' | :::ยป [[ROUTINE control ratio]], ''R/E'' | ||
:::ยป [[Excess E-P capacity factor |Excess ''E-P'' capacity factor]], ''j<sub>ExP</sub>'' = (''E-P'')/''E'' = 1-''P/E'' | :::ยป [[Excess E-P capacity factor |Excess ''E-P'' capacity factor]], ''j<sub>ExP</sub>'' = (''E-P'')/''E'' = 1-''P/E'' | ||
:::ยป [[ETS coupling efficiency]], ''j<sub>โE</sub>'' = 1-''L/E'' | :::ยป [[ETS coupling efficiency]], ''j<sub>โE</sub>'' = 1-''L/E'' |
Revision as of 12:59, 8 February 2016
Description
The apparent excess E-R capacity factor (E-R coupling control factor), jExR = (E-R)/E = 1-R/E, is an expression of the relative scope of increasing ROUTINE respiration in intact cells by uncoupling. jExR = 0.0 for zero excess capacity when R=E; jExR = 1.0 for the maximum limit when R=0. The ROUTINE state of intact cells is stimulated to ETS by uncoupler titration, which yields the excess E-R capacity, ExR=E-R. Since ETS capacity is significantly higher than OXPHOS capacity in various cell types (as shown by cell ergometry), ExR or jExR is not a reserve capacity available for the cell to increase oxidative phosphorylation, but strictly a scope (reserve?) for uncoupling respiration. Similarly, the apparent excess E-P capacity, ExP=E-P, is not a respiratory reserve in the sense of oxidative phosphorylation.
Abbreviation: jExR
Reference: Flux control factor
MitoPedia concepts:
Respiratory control ratio
Compare
- ยป ROUTINE control ratio, R/E
- ยป Excess E-P capacity factor, jExP = (E-P)/E = 1-P/E
- ยป ETS coupling efficiency, jโE = 1-L/E