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Difference between revisions of "Q-junction"

From Bioblast
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|abbr=Q
|abbr=Q
|description=[[File:SUITp-Catg NFSGp.jpg|right|300px|Q-junction]]
|description=[[File:SUITp-Catg NFSGp.jpg|right|300px|Q-junction]]
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]], [[dihydro-orotate dehydrogenase]], and other enzyme complexes into the Q-cycle (ubiquinol/ubiquinone), and further to [[Complex III]] (CIII). The concept of the Q-junction, [[N-junction]] and [[F-junction]] provides the rationale for defining [[categories of SUIT protocols]].  
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]], [[dihydro-orotate dehydrogenase]], and other enzyme complexes into the Q-cycle (ubiquinol/ubiquinone), and further to [[Complex III]] (CIII). The concept of the Q-junction, with the [[N-junction]] and [[F-junction]] upstream, provides the rationale for defining [[categories of SUIT protocols]].
|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 NS 2012.jpg|right|500px|Q-junction]]
[[File:Hatefi 1962 NS 2012.jpg|right|500px|Q-junction]]
Convergent CI<small>&</small>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]].
:::: Convergent CI<small>&</small>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]].




''More details:'' [[Respiratory_complexes#Respiratory_complexes_-_more_than_five |»Respiratory complexes - more than five]]  
:::: ''More details:'' [[Respiratory_complexes#Respiratory_complexes_-_more_than_five |»Respiratory complexes - more than five]]  
:» [[O2k-Publications: Q-junction effect]]
::::» [[O2k-Publications: Q-junction effect]]

Revision as of 11:22, 27 February 2016


high-resolution terminology - matching measurements at high-resolution


Q-junction

Description

Q-junction

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, dihydro-orotate dehydrogenase, and other enzyme complexes into the Q-cycle (ubiquinol/ubiquinone), and further to Complex III (CIII). The concept of the Q-junction, with the N-junction and F-junction upstream, provides the rationale for defining categories of SUIT protocols.

Abbreviation: Q

Reference: Gnaiger 2009 Int J Biochem Cell Biol, Gnaiger 2014 MitoPathways



MitoPedia methods: Respirometry 


MitoPedia O2k and high-resolution respirometry: "SUIT protocol" is not in the list (O2k hardware, DatLab, Oroboros QM, O2k-Open Support, O2k-Respirometry, O2k-FluoRespirometry) of allowed values for the "MitoPedia O2k and high-resolution respirometry" property. SUIT protocol"SUIT protocol" is not in the list (O2k hardware, DatLab, Oroboros QM, O2k-Open Support, O2k-Respirometry, O2k-FluoRespirometry) of allowed values for the "MitoPedia O2k and high-resolution respirometry" property. 


MitoPedia topics: Enzyme 

Contributed by Gnaiger E 2010-08-15, edited 2016-02-12.
Q-junction
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