Q-junction: Difference between revisions
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{{MitoPedia | {{MitoPedia | ||
|abbr=Q | |abbr=Q | ||
|description=The '''Q-junction''' is a junction for [[convergent electron flow]] in the [[electron transfer system]] (ETS) from [[Complex I]] ( | |description=The '''Q-junction''' is a junction for [[convergent electron flow]] in the [[electron transfer system]] (ETS) from [[Complex I]] (CI), [[Complex II]] (CII), [[electron-transferring flavoprotein]] (CETF), [[glycerophosphate dehydrogenase complex]] (CGpDH), choline dehydrogenase and other enzyme complexes into the [[Q-cycle]] (ubiquinol/ubiquinone), and further to [[Complex III]] (CIII). | ||
|info=[[Gnaiger 2009 Int J Biochem Cell Biol]], [[Gnaiger 2014 MitoPathways]] | |info=[[Gnaiger 2009 Int J Biochem Cell Biol]], [[Gnaiger 2014 MitoPathways]] | ||
|type=Respiration | |type=Respiration | ||
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}} | }} | ||
[[File:Hatefi 1962 CI+II 2012.jpg|right|500px|Q-junction]] | [[File:Hatefi 1962 CI+II 2012.jpg|right|500px|Q-junction]] | ||
Convergent | Convergent CI&II-linked electron flow at the Q-junction, exerting an additive effect on flux, versus electron gaiting for separation of single input pathways (upper panel: [[Gnaiger 2009 Int J Biochem Cell Biol |Gnaiger 2009]]; lower panel: [[Hatefi 1962 J Biol Chem-XLII]]). From Fig. 1.5 in [[Gnaiger 2014 MitoPathways]]. | ||
* [[O2k-Publications: Q-Junction Effect]] | * [[O2k-Publications: Q-Junction Effect]] |
Revision as of 15:15, 14 August 2014
Description
The Q-junction is a junction for convergent electron flow in the electron transfer system (ETS) from Complex I (CI), Complex II (CII), electron-transferring flavoprotein (CETF), glycerophosphate dehydrogenase complex (CGpDH), choline dehydrogenase and other enzyme complexes into the Q-cycle (ubiquinol/ubiquinone), and further to Complex III (CIII).
Abbreviation: Q
Reference: Gnaiger 2009 Int J Biochem Cell Biol, Gnaiger 2014 MitoPathways
MitoPedia methods:
Respirometry
Convergent CI&II-linked electron flow at the Q-junction, exerting an additive effect on flux, versus electron gaiting for separation of single input pathways (upper panel: Gnaiger 2009; lower panel: Hatefi 1962 J Biol Chem-XLII). From Fig. 1.5 in Gnaiger 2014 MitoPathways.