Reactome | Electron transfer from ubiquinol to cytochrome c of complex III

Schema > Reaction > Entries

Electron transfer from ubiquinol to cytochrome c of complex III Show undefined attributes

authored	[InstanceEdit:164656] Jassal, Bijay, 2005-06-14
catalystActivity	[CatalystActivity:164660] quinol-cytochrome-c reductase activity of Cytochrome c reductase [mitochondrial inner membrane]
category	transition
compartment	[Compartment:70616] mitochondrial inner membrane
created	[InstanceEdit:164648] Jassal, Bijay, 2005-06-10
crossReference	[DatabaseIdentifier:9864462] RHEA:11485
dbId	164651
displayName	Electron transfer from ubiquinol to cytochrome c of complex III
eventOf	[Pathway:R-HSA-611105] Respiratory electron transport - Homo sapiens
followingEvent	[Reaction:R-HSA-163214] Electron transfer from reduced cytochrome c to molecular oxygen - Homo sapiens [Reaction:R-HSA-163217] Complex I oxidises NADH to NAD+, reduces CoQ to CoQH2 - Homo sapiens [Reaction:R-HSA-169270] ETFDH oxidises ETF (reduced) to ETF, reduces CoQ to CoQH2 - Homo sapiens [Reaction:R-HSA-170026] UCP1 imports a proton - Homo sapiens [Reaction:R-HSA-9864415] AAC1 imports a proton - Homo sapiens [Reaction:R-HSA-163213] Transfer of electrons through the succinate dehydrogenase complex - Homo sapiens [Reaction:R-HSA-166219] FA anion picks up a proton - Homo sapiens [Reaction:R-HSA-164834] Enzyme-bound ATP is released - Homo sapiens
goBiologicalProcess	[GO_BiologicalProcess:15812] mitochondrial electron transport, ubiquinol to cytochrome c
input	[SimpleEntity:R-ALL-73663] CoQ [mitochondrial inner membrane] 2 × [SimpleEntity:R-ALL-2162198] CoQH2 [mitochondrial inner membrane] 2 × [EntityWithAccessionedSequence:R-HSA-352607] Cytochrome c (oxidised) [mitochondrial inner membrane] 2 × [SimpleEntity:R-ALL-113529] H+ [mitochondrial matrix]
isInDisease	false
isInferred	false
literatureReference	[LiteratureReference:164791] Possible molecular mechanisms of the protonmotive function of cytochrome [LiteratureReference:164788] Protonmotive redox mechanism of the cytochrome b-c1 complex in the
maxDepth	1
modified	[InstanceEdit:11080360] Weiser, Joel, 2026-03-16
name	Electron transfer from ubiquinol to cytochrome c of complex III
orthologousEvent	[Reaction:R-RNO-164651] Electron transfer from ubiquinol to cytochrome c of complex III - Rattus norvegicus [Reaction:R-BTA-164651] Electron transfer from ubiquinol to cytochrome c of complex III - Bos taurus [Reaction:R-SSC-164651] Electron transfer from ubiquinol to cytochrome c of complex III - Sus scrofa [Reaction:R-GGA-164651] Electron transfer from ubiquinol to cytochrome c of complex III - Gallus gallus [Reaction:R-DME-164651] Electron transfer from ubiquinol to cytochrome c of complex III - Drosophila melanogaster [Reaction:R-MMU-164651] Electron transfer from ubiquinol to cytochrome c of complex III - Mus musculus [Reaction:R-CEL-164651] Electron transfer from ubiquinol to cytochrome c of complex III - Caenorhabditis elegans [Reaction:R-DDI-164651] Electron transfer from ubiquinol to cytochrome c of complex III - Dictyostelium discoideum [Reaction:R-SPO-164651] Electron transfer from ubiquinol to cytochrome c of complex III - Schizosaccharomyces pombe [Reaction:R-SCE-164651] Electron transfer from ubiquinol to cytochrome c of complex III - Saccharomyces cerevisiae [Reaction:R-DRE-164651] Electron transfer from ubiquinol to cytochrome c of complex III - Danio rerio
output	2 × [SimpleEntity:R-ALL-73663] CoQ [mitochondrial inner membrane] [SimpleEntity:R-ALL-2162198] CoQH2 [mitochondrial inner membrane] 2 × [EntityWithAccessionedSequence:R-HSA-352609] Cytochrome c (reduced) [mitochondrial inner membrane] 4 × [SimpleEntity:R-ALL-163953] H+ [mitochondrial intermembrane space]
precedingEvent	[Reaction:R-HSA-163214] Electron transfer from reduced cytochrome c to molecular oxygen - Homo sapiens [Reaction:R-HSA-163217] Complex I oxidises NADH to NAD+, reduces CoQ to CoQH2 - Homo sapiens [Reaction:R-HSA-169270] ETFDH oxidises ETF (reduced) to ETF, reduces CoQ to CoQH2 - Homo sapiens [Reaction:R-HSA-163213] Transfer of electrons through the succinate dehydrogenase complex - Homo sapiens
previousReviewStatus	[ReviewStatus:9821385] four stars
releaseDate	2005-04-11
reviewStatus	[ReviewStatus:9821382] five stars
reviewed	[InstanceEdit:9910688] Hill, David P, 2024-05-16
schemaClass	Reaction
species	[Species:48887] Homo sapiens
stId	R-HSA-164651
summation	[Summation:164655] The protonmotive Q cycle is the mechanism by which complex I...
updateTrackers	[UpdateTracker:9791811] Update Tracker - [Reaction:164651] Electron transfer from ubiquinol to cytochrome c of complex III - v25:[add_removeInput, add_removeOutput] [UpdateTracker:9784262] Update Tracker - [Reaction:164651] Electron transfer from ubiquinol to cytochrome c of complex III - v54:[modifyText] [UpdateTracker:9910959] Update Tracker - [Reaction:164651] Electron transfer from ubiquinol to cytochrome c of complex III - v89:[add_removeInput, add_removeOutput]

Referrals

(precedingEvent)	[Reaction:R-HSA-163217] Complex I oxidises NADH to NAD+, reduces CoQ to CoQH2 [Reaction:R-HSA-163214] Electron transfer from reduced cytochrome c to molecular oxygen [Reaction:R-HSA-163213] Transfer of electrons through the succinate dehydrogenase complex [Reaction:R-HSA-169270] ETFDH oxidises ETF (reduced) to ETF, reduces CoQ to CoQH2 [Reaction:R-HSA-170026] UCP1 imports a proton [Reaction:R-HSA-9864415] AAC1 imports a proton [Reaction:R-HSA-166219] FA anion picks up a proton [Reaction:R-HSA-164834] Enzyme-bound ATP is released
(hasEvent)	[Pathway:R-HSA-611105] Respiratory electron transport
(updatedInstance)	[UpdateTracker:9791811] Update Tracker - [Reaction:164651] Electron transfer from ubiquinol to cytochrome c of complex III - v25:[add_removeInput, add_removeOutput] [UpdateTracker:9784262] Update Tracker - [Reaction:164651] Electron transfer from ubiquinol to cytochrome c of complex III - v54:[modifyText] [UpdateTracker:9910959] Update Tracker - [Reaction:164651] Electron transfer from ubiquinol to cytochrome c of complex III - v89:[add_removeInput, add_removeOutput]

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