Difference between revisions of "Coupling-control ratio"

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Coupling-control ratio

Description

Coupling control ratios, CCR, are flux control ratios, FCR, at a constant mitochondrial substrate state. In mitochondrial preparations, there are three well-defined coupling states of respiration, L, P, E (LEAK, OXPHOS, ETS). In intact cells, state P cannot be induced, but a ROUTINE state of respiration, R, can be measured. The reference state, J_ref, is defined by taking J_ref as the maximum flux, i.e. flux in the ETS state, E, such that the lower and upper limits of CCR are defined as 0.0 and 1.0. Then there are two mitochondrial CCR, L/E and P/E, and two CCR for intact cells, L/E and R/E.

Abbreviation: CCR

Reference: Flux control ratio

MitoPedia methods: Respirometry

MitoPedia topics: "Respiratory control ratio" is not in the list (Enzyme, Medium, Inhibitor, Substrate and metabolite, Uncoupler, Sample preparation, Permeabilization agent, EAGLE, MitoGlobal Organizations, MitoGlobal Centres, ...) of allowed values for the "MitoPedia topic" property. Respiratory control ratio"Respiratory control ratio" is not in the list (Enzyme, Medium, Inhibitor, Substrate and metabolite, Uncoupler, Sample preparation, Permeabilization agent, EAGLE, MitoGlobal Organizations, MitoGlobal Centres, ...) of allowed values for the "MitoPedia topic" property.

The Blue Book 2014: Fig. 2.4.

Coupling control ratios related to free capacities

L/P coupling control ratio, L/P

Free OXPHOS capacity, ≈P = P-L

OXPHOS coupling efficiency, j_≈P = ≈P/P = 1-L/P

L/R coupling control ratio, L/R

Free ROUTINE activity, ≈R = R-L

ROUTINE coupling efficiency, j_≈R = ≈R/R = 1-L/R

LEAK control ratio, L/E

Free ETS capacity, ≈E = E-L

ETS coupling efficiency, j_≈E = ≈E/E = 1-L/E

netOXPHOS control ratio, ≈P/E=(P-L)/E

Free OXPHOS capacity, ≈P = P-L

netROUTINE control ratio, ≈R/E=(R-L)/E

Free ROUTINE activity, ≈R = R-L

More details: »ETS coupling efficiency

Coupling control ratios related to excess capacities

OXPHOS control ratio, P/E

Excess E-P capacity, ExP = E-P

Excess E-P capacity factor, j_ExP = ExP/E = 1-P/E

ROUTINE control ratio, R/E

Excess E-R capacity, ExR = E-R

Excess E-R capacity factor, j_ExR = ExR/E = 1-R/E

Compare

» Coupling control factor, CCF = 1-CCR

» Respiratory acceptor control ratio, RCR

@@ Line 10: / Line 10: @@
 |mitopedia topic=Respiratory control ratio
 }}
-[[Image:EPL-free and excess.jpg|right|300px|thumb|file=Gnaiger_2014_MitoPathways|Blue Book 2014: Fig. 2.4.]]
+[[Image:EPL-free and excess.jpg|right|400px|thumb|[[Gnaiger_2014_MitoPathways |The Blue Book 2014]]: Fig. 2.4.]]
 == Coupling control ratios related to free capacities ==
 * [[L/P coupling control ratio |''L/P'' coupling control ratio]], ''L/P''
-:: [[Free OXPHOS capacity]], ''≈P = P-L''; [[OXPHOS coupling efficiency]], ''j<sub>≈P</sub>'' = (''≈P'')/''P'' = 1-''L/P''
+:: [[Free OXPHOS capacity]], ''≈P = P-L''
+:: [[OXPHOS coupling efficiency]], ''j<sub>≈P</sub>'' = ''≈P''/''P'' = 1-''L/P''
 * [[L/R coupling control ratio |''L/R'' coupling control ratio]], ''L/R''
-:: [[Free ROUTINE activity]], ''≈R = R-L''; [[ROUTINE coupling efficiency]], ''j<sub>≈R</sub>'' = (''≈R'')/''R'' = 1-''L/R''
+:: [[Free ROUTINE activity]], ''≈R = R-L''
+:: [[ROUTINE coupling efficiency]], ''j<sub>≈R</sub>'' = ''≈R''/''R'' = 1-''L/R''
 * [[LEAK control ratio]], ''L/E''
-:: [[Free ETS capacity]], ''≈E = E-L''; [[ETS coupling efficiency]], ''j<sub>≈E</sub>'' = (''≈E'')/''E'' = 1-''L/E''
+:: [[Free ETS capacity]], ''≈E = E-L''
+:: [[ETS coupling efficiency]], ''j<sub>≈E</sub>'' = ''≈E''/''E'' = 1-''L/E''
 * [[netOXPHOS control ratio]], ''≈P/E''=(''P-L'')/''E''
 :: [[Free OXPHOS capacity]], ''≈P = P-L''
@@ Line 27: / Line 30: @@
 == Coupling control ratios related to excess capacities ==
 * [[OXPHOS control ratio]], ''P/E''
-:: [[Excess E-P capacity |Excess ''E-P'' capacity]], ''ExP = E-P''; [[Excess E-P capacity factor |Excess ''E-P'' capacity factor]], ''j<sub>ExP</sub>'' = (''ExP'')/''E'' = 1-''P/E''
+:: [[Excess E-P capacity |Excess ''E-P'' capacity]], ''ExP = E-P''
+:: [[Excess E-P capacity factor |Excess ''E-P'' capacity factor]], ''j<sub>ExP</sub>'' = ''ExP''/''E'' = 1-''P/E''
 * [[ROUTINE control ratio]], ''R/E''
-:: [[Excess E-R capacity |Excess ''E-R'' capacity]], ''ExR = E-R''; [[Excess E-R capacity factor |Excess ''E-R'' capacity factor]], ''j<sub>ExR</sub>'' = (''ExR'')/''E'' = 1-''R/E''
+:: [[Excess E-R capacity |Excess ''E-R'' capacity]], ''ExR = E-R''
+:: [[Excess E-R capacity factor |Excess ''E-R'' capacity factor]], ''j<sub>ExR</sub>'' = ''ExR''/''E'' = 1-''R/E''
-* [[Respiratory acceptor control ratio]]
 == Compare ==
-:::»  [[Coupling control factor]], ''CCF''
+:::»  [[Coupling control factor]], ''CCF'' = 1-''CCR''
+:::» [[Respiratory acceptor control ratio]], RCR