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Information on EC 7.1.1.10 - ferredoxin---quinone oxidoreductase (H+-translocating)

for references in articles please use BRENDA:EC7.1.1.10
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EC Tree
IUBMB Comments
The enzyme, present in plants and cyanobacteria, couples electron transport from ferredoxin to plastoquinone and proton pumping from the cytoplasm to the thylakoid lumen. It participates in cyclic electron flow, retuning electrons generated by photosystem I to the plastoquinone pool, thus bypassing the generation of reducing power. It may also participate in respiration using electrons originating from NADPH via the action of EC 1.18.1.2, ferredoxin---NADP+ reductase (FNR) operating in the direction of ferredoxin reduction. It is a large complex, with some of its subunits resembling those from the bacterial/mitochondrial EC 7.1.1.2, NADH:ubiquinone reductase (H+-translocating). However, it lacks the NADH-oxidizing module and instead has a module that interacts with ferredoxin. Several forms of the enzyme exist, differing in their exact combination of subunits used. Some of the forms participate in carbon dioxide hydration rather than electron transfer.
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Word Map
  • 7.1.1.10
  • co2
  • synechocystis
  • thylakoid
  • elongatus
  • cyanobacterium
  • thermosynechococcus
  • ferredoxins
  • re-reduction
  • synechococcus
  • low-co2
  • l-shaped
  • chlororespiration
  • supercomplex
The expected taxonomic range for this enzyme is: Eukaryota, Bacteria
Reaction Schemes
2
reduced ferredoxin [iron-sulfur] cluster
+
+
6
=
2
oxidized ferredoxin [iron-sulfur] cluster
+
+
7
Synonyms
ndh-1l, ndh-1 complex, ndh-1l complex, ndh-1ms, cyanobacterial ndh-1 complex, photosynthetic complex i, nad(p)h dehydrogenase-like (ndh) complex, ndh-1-like complex, nadph:plastoquinone oxidoreductase complex, more
REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
2 reduced ferredoxin [iron-sulfur] cluster + plastoquinone + 6 H+[side 1] = 2 oxidized ferredoxin [iron-sulfur] cluster + plastoquinol + 7 H+[side 2]
show the reaction diagram
PATHWAY SOURCE
PATHWAYS
-
,
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