Please wait a moment until all data is loaded. This message will disappear when all data is loaded.
IUBMB CommentsA complex generally comprising an FAD-containing component that also binds the carboxylate substrate (A subunit), a component that contains three different iron-sulfur centers [2Fe-2S], [4Fe-4S], and [3Fe-4S] (B subunit), and a hydrophobic membrane-anchor component (C, or C and D subunits) that is also the site of the interaction with quinones. The enzyme is found in the inner mitochondrial membrane in eukaryotes and the plasma membrane of bacteria and archaea, with the hydrophilic domain extending into the mitochondrial matrix and the cytoplasm, respectively. Under aerobic conditions the enzyme catalyses succinate oxidation, a key step in the citric acid (TCA) cycle, transferring the electrons to quinones in the membrane, thus linking the TCA cycle with the aerobic respiratory chain (where it is known as complex II). Under anaerobic conditions the enzyme functions as a fumarate reductase, transferring electrons from the quinol pool to fumarate, and participating in anaerobic respiration with fumarate as the terminal electron acceptor. The enzyme interacts with the quinone produced by the organism, such as ubiquinone, menaquinone, caldariellaquinone, thermoplasmaquinone, rhodoquinone etc. Some of the enzymes contain two heme subunits in their membrane anchor subunit. These enzymes catalyse an electrogenic reaction and are thus classified as EC 7.1.1.12, succinate dehydrogenase (electrogenic, proton-motive force generating).
Synonyms
succinate dehydrogenase, complex ii, succinic dehydrogenase, mitochondrial complex ii, succinate dehydrogenase complex, mitochondrial succinate dehydrogenase, succinate dehydrogenase subunit b, succinate dehydrogenase b, sdhcdab, succinate-ubiquinone oxidoreductase,
more
Please wait a moment until the data is sorted. This message will disappear when the data is sorted.
8-methylmenaquinol:fumarate reductase
-
-
bacterial succinate:quinone oxidoreductase flavoprotein
-
complex II of the respiratory chain
-
complex II succinate:ubiquinone oxidoreductase
-
-
dehydrogenase, succinate
-
-
-
-
dehydrogenase/complex II
-
EC 1.3.5.4
-
-
formerly
-
EC 1.3.99.1
-
-
formerly
-
Flavocytochrome c3
-
-
-
-
fumarate reductase complex
-
-
-
-
fumaric hydrogenase
-
-
-
-
Iron(III)-induced flavocytochrome C3
-
-
-
-
iron-sulfur subunit of succinate dehydrogenase
-
menaquinol-1 fumarate reductase
menaquinol-fumarate oxidoreductase
menaquinol:fumarate oxidoreductase
methylmenaquinol:fumarate reductase
mitochondrial succinate dehydrogenase
-
-
mitochondrial succinate:ubiquinone oxidoreductase
-
-
MSMEG_0420
A0QPJ1; A0QPJ2; A0QPJ3; A0QPJ4; A0QPJ5
-
non-classical succinate:quinone reductase
quinol-fumarate reductase
quinol:fumarate reductase
sdhABE
-
operon encoding for non-classical succinate quinone reductase
sdhCAB
-
operon encoding succinate dehydrogenase
succinate dehydrogenase (caldariellaquinone)
succinate dehydrogenase (quinone)
-
-
-
-
succinate dehydrogenase B
-
-
succinate dehydrogenase complex
-
-
-
-
succinate dehydrogenase flavoprotein subunit Sdh1p
-
-
succinate dehydrogenase iron-sulfur protein
succinate dehydrogenase iron-sulphur protein
succinate dehydrogenase subunit B
-
-
succinate oxidoreductase
-
-
-
-
succinate-2,6-dichlorophenolindophenol oxidoreductase
succinate-coenzyme Q reductase
-
-
-
-
succinate-quinone oxidoreductase
succinate-quinone reductase
-
-
succinate-ubiquinone oxidoreductase
succinate:caldariellaquinone oxidoreductase
succinate:menaquinone 7-reductase
-
-
succinate:menaquinone oxidoreductase
succinate:menaquinone reductase
-
-
succinate:MK reductase
-
-
succinate:quinone oxidoreductase
succinate:quinone reductase
succinate:quinone reductases
succinate:ubiquinone oxidoreductase
succinate:ubiquinone reductase
-
-
succinic acid dehydrogenase
-
-
-
-
succinic dehydrogenase
-
-
-
-
succinodehydrogenase
-
-
-
-
succinyl dehydrogenase
-
-
-
-
complex II

-
-
-
-
Complex II homolog

-
DCPIP oxidoreductase

-
-
DCPIP oxidoreductase
-
-
-
fdrB

Megalodesulfovibrio gigas
-
fdrB
Megalodesulfovibrio gigas DSM 1382
-
-
FrdA

flavoprotein subunit
FRdABCD

-
FrdC

-
FRdCAB

-
-
fumarate reductase

-
-
-
-
menaquinol-1 fumarate reductase

-
menaquinol-1 fumarate reductase
-
menaquinol-fumarate oxidoreductase

-
-
-
-
menaquinol-fumarate oxidoreductase
cf. EC 1.3.5.1, succinate-ubiquinone oxidoreductase, structurally and functionally related membrane-bound enzyme complexes
menaquinol:fumarate oxidoreductase

-
-
-
-
menaquinol:fumarate oxidoreductase
-
-
methylmenaquinol:fumarate reductase

-
-
methylmenaquinol:fumarate reductase
-
-
MFR

-
-
MFR complex

-
-
mitochondrial complex II

-
-
mitochondrial complex II
-
-
mitochondrial complex II
-
-
MSMEG_0416

A0QPJ1; A0QPJ2; A0QPJ3; A0QPJ4; A0QPJ5
-
MSMEG_0416
A0QPJ1; A0QPJ2; A0QPJ3; A0QPJ4; A0QPJ5
-
-
MSMEG_0417

A0QPJ1; A0QPJ2; A0QPJ3; A0QPJ4; A0QPJ5
-
MSMEG_0417
A0QPJ1; A0QPJ2; A0QPJ3; A0QPJ4; A0QPJ5
-
-
MSMEG_0418

A0QPJ1; A0QPJ2; A0QPJ3; A0QPJ4; A0QPJ5
-
MSMEG_0418
A0QPJ1; A0QPJ2; A0QPJ3; A0QPJ4; A0QPJ5
-
-
MSMEG_0419

A0QPJ1; A0QPJ2; A0QPJ3; A0QPJ4; A0QPJ5
-
MSMEG_0419
A0QPJ1; A0QPJ2; A0QPJ3; A0QPJ4; A0QPJ5
-
-
MSMEG_1669

-
MSMEG_1670

-
MSMEG_1671

-
MSMEG_1672

-
non-classical succinate:quinone reductase

-
-
non-classical succinate:quinone reductase
-
-
QFR

-
QFR
Megalodesulfovibrio gigas
-
QFR
Megalodesulfovibrio gigas DSM 1382
-
-
quinol-fumarate reductase

-
quinol-fumarate reductase
-
-
quinol:fumarate reductase

-
-
quinol:fumarate reductase
-
-
quinol:fumarate reductase
-
quinol:fumarate reductase
-
quinol:fumarate reductase
-
-
quinol:fumarate reductase
Megalodesulfovibrio gigas
-
quinol:fumarate reductase
Megalodesulfovibrio gigas DSM 1382
-
-
quinol:fumarate reductase
-
-
SDG

-
-
SDG-1

-
-
SDG-2

-
-
SDH

-
-
SDH
-
-
656605, 684284, 686169, 686171, 686399, 686400, 686995, 687015, 687110, 687955, 687963, 687965, 687966, 687968, 688213, 688964, 697001, 697362, 712976
SDH
-
-
654172, 685306, 686054, 688533, 689109, 689159, 689285, 695601, 698668, 712595, 762781
SDH1

A0QPJ1; A0QPJ2; A0QPJ3; A0QPJ4; A0QPJ5
-
SDH1
A0QPJ1; A0QPJ2; A0QPJ3; A0QPJ4; A0QPJ5
-
-
SDH2

-
SDH4

-
-
SdhA

-
SdhA
catalytic FAD binding subunit
SdhA
catalytic FAD binding subunit
-
SdhA
catalytic FAD binding subunit
-
SdhA
succinate dehydrogenase subunit A
SDHB

-
SDHB
-
iron-sulfur subunit (SdhB) of mitochondrial succinate dehydrogenase
SDHB
sdhB gene encodes an iron-sulfur subunit of succinate dehydrogenase
SDHB
-
iron-sulfur subunit (SdhB) of mitochondrial succinate dehydrogenase
SDHB
-
iron-sulfur subunit (SdhB) of mitochondrial succinate dehydrogenase
SdhC

-
SdhD

-
succinate dehydrogenase subunit that also coordinate the low spin hexa-coordinated heme b
SdhD
hydrophobic membrane anchor protein subunit
SdhD
hydrophobic membrane anchor protein subunit
-
SdhD
hydrophobic membrane anchor protein subunit
-
SDISP

-
-
SQR

-
-
SQR
-
non-classical succinate quinone reductase
succinate dehydrogenase

-
-
succinate dehydrogenase
-
-
succinate dehydrogenase
-
-
succinate dehydrogenase
-
succinate dehydrogenase
-
-
succinate dehydrogenase
-
-
succinate dehydrogenase
-
succinate dehydrogenase
-
succinate dehydrogenase
-
-
succinate dehydrogenase
-
-
succinate dehydrogenase
-
succinate dehydrogenase
-
succinate dehydrogenase
-
-
succinate dehydrogenase
-
succinate dehydrogenase
-
-
succinate dehydrogenase
-
-
succinate dehydrogenase
-
succinate dehydrogenase
-
-
succinate dehydrogenase
-
-
succinate dehydrogenase
-
-
succinate dehydrogenase
-
-
succinate dehydrogenase
-
-
succinate dehydrogenase
-
-
succinate dehydrogenase
-
-
succinate dehydrogenase
-
succinate dehydrogenase
-
-
succinate dehydrogenase
-
-
succinate dehydrogenase
-
succinate dehydrogenase
-
-
succinate dehydrogenase
ambiguous
succinate dehydrogenase
ambiguous
-
succinate dehydrogenase
-
-
succinate dehydrogenase (caldariellaquinone)

-
succinate dehydrogenase (caldariellaquinone)
-
-
succinate dehydrogenase iron-sulfur protein

-
-
succinate dehydrogenase iron-sulfur protein
-
-
-
succinate dehydrogenase iron-sulphur protein

UniProt
succinate dehydrogenase iron-sulphur protein
UniProt
-
succinate-2,6-dichlorophenolindophenol oxidoreductase

-
-
succinate-2,6-dichlorophenolindophenol oxidoreductase
-
-
-
succinate-quinone oxidoreductase

-
-
succinate-quinone oxidoreductase
-
-
succinate-quinone oxidoreductase
-
-
succinate-quinone oxidoreductase
-
-
succinate-ubiquinone oxidoreductase

-
-
succinate-ubiquinone oxidoreductase
-
cf. EC 1.3.5.4, menaquinol-fumarate oxidoreductase, structurally and functionally related membrane-bound enzyme complexes
succinate:caldariellaquinone oxidoreductase

-
succinate:caldariellaquinone oxidoreductase
-
-
succinate:menaquinone oxidoreductase

-
-
succinate:menaquinone oxidoreductase
-
-
succinate:quinone oxidoreductase

-
succinate:quinone oxidoreductase
-
-
succinate:quinone oxidoreductase
-
ambiguous
succinate:quinone oxidoreductase
-
-
-
succinate:quinone oxidoreductase
-
-
succinate:quinone oxidoreductase
-
-
succinate:quinone oxidoreductase
-
ambiguous
succinate:quinone oxidoreductase
-
succinate:quinone oxidoreductase
-
succinate:quinone oxidoreductase
-
-
succinate:quinone oxidoreductase
-
-
succinate:quinone oxidoreductase
-
-
succinate:quinone oxidoreductase
-
-
succinate:quinone oxidoreductase
-
succinate:quinone oxidoreductase
-
-
succinate:quinone oxidoreductase
-
-
succinate:quinone oxidoreductase
-
-
-
succinate:quinone oxidoreductase
-
-
succinate:quinone oxidoreductase
-
ambiguous
succinate:quinone reductase

-
-
succinate:quinone reductase
-
-