Difference between revisions of "Q-junction"

Revision as of 16:00, 8 June 2015

high-resolution terminology - matching measurements at high-resolution

Q-junction

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 complex (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

MitoPedia topics: Enzyme

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.

More details: »Respiratory complexes - more than five

» O2k-Publications: Q-junction effect

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 {{MitoPedia
 |abbr=Q
-|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).
+|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 complex]] (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]]
 |type=Respiration