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Literature summary extracted from

  • Hauska, G.; Hurt, E.; Gabellini, N.; Lockau, W.
    Comparative aspects of quinol-cytochrome c/plastocyanin oxidoreductases (1983), Biochim. Biophys. Acta, 726, 97-133.
    View publication on PubMed

Inhibitors

EC Number Inhibitors Comment Organism Structure
7.1.1.6 2,5-dibromo-3-methyl-6-isopropylbenzoquinone
-
Spinacia oleracea
7.1.1.6 2,5-dibromo-3-methyl-6-isopropylbenzoquinone
-
Trichormus variabilis
7.1.1.6 2-Iodo-6-isopropyl-3-methyl-2',2,4'-trinitrodiphenyl ether
-
Spinacia oleracea
7.1.1.6 2-Iodo-6-isopropyl-3-methyl-2',2,4'-trinitrodiphenyl ether
-
Trichormus variabilis
7.1.1.6 5-(n-undecyl)-6-hydroxy-4,7-dioxobenzothiazole
-
Spinacia oleracea
7.1.1.6 5-(n-undecyl)-6-hydroxy-4,7-dioxobenzothiazole
-
Trichormus variabilis
7.1.1.6 additional information overview Spinacia oleracea
7.1.1.6 additional information overview Trichormus variabilis
7.1.1.8 2,5-dibromo-6-methyl-3-isopropyl-1,4-benzoquinone DBMIB, most potent inhibitor Bos taurus
7.1.1.8 2,5-dibromo-6-methyl-3-isopropyl-1,4-benzoquinone DBMIB, most potent inhibitor Cereibacter sphaeroides
7.1.1.8 2,5-dibromo-6-methyl-3-isopropyl-1,4-benzoquinone DBMIB, most potent inhibitor Spinacia oleracea
7.1.1.8 2,5-dibromo-6-methyl-3-isopropyl-1,4-benzoquinone DBMIB, most potent inhibitor Trichormus variabilis
7.1.1.8 2-heptyl-4-hydroxyquinoline N-oxide
-
Bos taurus
7.1.1.8 2-heptyl-4-hydroxyquinoline N-oxide
-
Cereibacter sphaeroides
7.1.1.8 2-heptyl-4-hydroxyquinoline N-oxide
-
Spinacia oleracea
7.1.1.8 antimycin A
-
Bos taurus
7.1.1.8 antimycin A
-
Cereibacter sphaeroides
7.1.1.8 antimycin A
-
Saccharomyces cerevisiae
7.1.1.8 antimycin A
-
Spinacia oleracea
7.1.1.8 antimycin A
-
Trichormus variabilis
7.1.1.8 Myxothiazol
-
Bos taurus
7.1.1.8 Myxothiazol
-
Cereibacter sphaeroides
7.1.1.8 Myxothiazol
-
Saccharomyces cerevisiae
7.1.1.8 Myxothiazol
-
Spinacia oleracea
7.1.1.8 undecyl-hydroxy-dioxobenzoxythiazole UHDBT, efficient universal inhibitor Bos taurus
7.1.1.8 undecyl-hydroxy-dioxobenzoxythiazole UHDBT, efficient universal inhibitor Cereibacter sphaeroides
7.1.1.8 undecyl-hydroxy-dioxobenzoxythiazole UHDBT, efficient universal inhibitor Spinacia oleracea
7.1.1.8 undecyl-hydroxy-dioxobenzoxythiazole UHDBT, efficient universal inhibitor Trichormus variabilis

Localization

EC Number Localization Comment Organism GeneOntology No. Textmining
7.1.1.8 mitochondrion
-
Saccharomyces cerevisiae 5739
-
7.1.1.8 mitochondrion
-
Bos taurus 5739
-
7.1.1.8 mitochondrion
-
Neurospora crassa 5739
-

Metals/Ions

EC Number Metals/Ions Comment Organism Structure
7.1.1.8 Iron-sulfur cluster
-
Saccharomyces cerevisiae
7.1.1.8 Iron-sulfur cluster
-
Bos taurus
7.1.1.8 Iron-sulfur cluster
-
Neurospora crassa
7.1.1.8 Iron-sulfur cluster
-
Cereibacter sphaeroides
7.1.1.8 Iron-sulfur cluster
-
Spinacia oleracea
7.1.1.8 Iron-sulfur cluster
-
Trichormus variabilis

Molecular Weight [Da]

EC Number Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
7.1.1.6 142000
-
calculation from cytochrome f content Spinacia oleracea
7.1.1.6 160000
-
calculation from ultraviolet spectrum assuming subunit stoichiometry of 1:2:1:2 Spinacia oleracea
7.1.1.6 185000
-
gel filtration Spinacia oleracea
7.1.1.8 8000
-
1 * 22500 + 1 * 31000/38000 + 1 * 22000 + 1 * 16000 + 1 * 8000, cytochrome b, cytochrome f, Rieske FeS protein, SDS-PAGE Trichormus variabilis
7.1.1.8 9000
-
1 * 52000 + 1 * 45000 + 1 * 30000 + 1 * 31000 + 1 * 25000 + 1 * 14000 + 1 * 12000 + 1 * 9000, core protein 1, core protein 2, cytochrome b, cytochrome c1, Riseke FeS protein, SDS-PAGE Neurospora crassa
7.1.1.8 11000
-
1 * 49000 + 1 * 45000 + 1 * 34000 + 1 * 29000 + 1 * 24000 + 1 * 13000 + 1 * 11000, core protein 1, core protein 2, cytochrome b, cytochrome c1, Rieske FeS protein, SDS-PAGE Bos taurus
7.1.1.8 11000
-
1 * 47000 + 1 * 39000 + 2 * 31000 + 1 * 23000 + 1 * 14000 + 1 * 13000 + 1 * 11000, core protein 1, core protein 2, cytochrome b, cytochrome c1, Riseke FeS protein, SDS-PAGE Saccharomyces cerevisiae
7.1.1.8 12000
-
1 * 52000 + 1 * 45000 + 1 * 30000 + 1 * 31000 + 1 * 25000 + 1 * 14000 + 1 * 12000 + 1 * 9000, core protein 1, core protein 2, cytochrome b, cytochrome c1, Riseke FeS protein, SDS-PAGE Neurospora crassa
7.1.1.8 13000
-
1 * 49000 + 1 * 45000 + 1 * 34000 + 1 * 29000 + 1 * 24000 + 1 * 13000 + 1 * 11000, core protein 1, core protein 2, cytochrome b, cytochrome c1, Rieske FeS protein, SDS-PAGE Bos taurus
7.1.1.8 13000
-
1 * 47000 + 1 * 39000 + 2 * 31000 + 1 * 23000 + 1 * 14000 + 1 * 13000 + 1 * 11000, core protein 1, core protein 2, cytochrome b, cytochrome c1, Riseke FeS protein, SDS-PAGE Saccharomyces cerevisiae
7.1.1.8 14000
-
1 * 52000 + 1 * 45000 + 1 * 30000 + 1 * 31000 + 1 * 25000 + 1 * 14000 + 1 * 12000 + 1 * 9000, core protein 1, core protein 2, cytochrome b, cytochrome c1, Riseke FeS protein, SDS-PAGE Neurospora crassa
7.1.1.8 14000
-
1 * 47000 + 1 * 39000 + 2 * 31000 + 1 * 23000 + 1 * 14000 + 1 * 13000 + 1 * 11000, core protein 1, core protein 2, cytochrome b, cytochrome c1, Riseke FeS protein, SDS-PAGE Saccharomyces cerevisiae
7.1.1.8 16000
-
1 * 22500 + 1 * 31000/38000 + 1 * 22000 + 1 * 16000 + 1 * 8000, cytochrome b, cytochrome f, Rieske FeS protein, SDS-PAGE Trichormus variabilis
7.1.1.8 17000
-
1 * 23000 + 1 * 33000/34000 + 1 * 20000 + 1 * 17000 + 1 * 5000, cytochrome b, cytochrome f, Rieske FeS protein, SDS-PAGE Spinacia oleracea
7.1.1.8 17000
-
1 * 23000 + 1 * 33000/34000 + 1 * 20000 + 1 * 17000 + 1 * 5000, cytochrome b, cytochrome c1, Rieske FeS protein, SDS-PAGE Spinacia oleracea
7.1.1.8 20000
-
1 * 23000 + 1 * 33000/34000 + 1 * 20000 + 1 * 17000 + 1 * 5000, cytochrome b, cytochrome f, Rieske FeS protein, SDS-PAGE Spinacia oleracea
7.1.1.8 20000
-
1 * 23000 + 1 * 33000/34000 + 1 * 20000 + 1 * 17000 + 1 * 5000, cytochrome b, cytochrome c1, Rieske FeS protein, SDS-PAGE Spinacia oleracea
7.1.1.8 22000
-
1 * 22500 + 1 * 31000/38000 + 1 * 22000 + 1 * 16000 + 1 * 8000, cytochrome b, cytochrome f, Rieske FeS protein, SDS-PAGE Trichormus variabilis
7.1.1.8 22500
-
1 * 22500 + 1 * 31000/38000 + 1 * 22000 + 1 * 16000 + 1 * 8000, cytochrome b, cytochrome f, Rieske FeS protein, SDS-PAGE Trichormus variabilis
7.1.1.8 23000
-
1 * 23000 + 1 * 33000/34000 + 1 * 20000 + 1 * 17000 + 1 * 5000, cytochrome b, cytochrome f, Rieske FeS protein, SDS-PAGE Spinacia oleracea
7.1.1.8 23000
-
1 * 47000 + 1 * 39000 + 2 * 31000 + 1 * 23000 + 1 * 14000 + 1 * 13000 + 1 * 11000, core protein 1, core protein 2, cytochrome b, cytochrome c1, Riseke FeS protein, SDS-PAGE Saccharomyces cerevisiae
7.1.1.8 23000
-
1 * 23000 + 1 * 33000/34000 + 1 * 20000 + 1 * 17000 + 1 * 5000, cytochrome b, cytochrome c1, Rieske FeS protein, SDS-PAGE Spinacia oleracea
7.1.1.8 24000
-
1 * 49000 + 1 * 45000 + 1 * 34000 + 1 * 29000 + 1 * 24000 + 1 * 13000 + 1 * 11000, core protein 1, core protein 2, cytochrome b, cytochrome c1, Rieske FeS protein, SDS-PAGE Bos taurus
7.1.1.8 25000
-
1 * 40000 + 1 * 34000 + 1 * 25000 + 1 + 6000, cytochrome b, cytochrome c1, SDS-PAGE Cereibacter sphaeroides
7.1.1.8 25000
-
1 * 52000 + 1 * 45000 + 1 * 30000 + 1 * 31000 + 1 * 25000 + 1 * 14000 + 1 * 12000 + 1 * 9000, core protein 1, core protein 2, cytochrome b, cytochrome c1, Riseke FeS protein, SDS-PAGE Neurospora crassa
7.1.1.8 29000
-
1 * 49000 + 1 * 45000 + 1 * 34000 + 1 * 29000 + 1 * 24000 + 1 * 13000 + 1 * 11000, core protein 1, core protein 2, cytochrome b, cytochrome c1, Rieske FeS protein, SDS-PAGE Bos taurus
7.1.1.8 30000
-
1 * 52000 + 1 * 45000 + 1 * 30000 + 1 * 31000 + 1 * 25000 + 1 * 14000 + 1 * 12000 + 1 * 9000, core protein 1, core protein 2, cytochrome b, cytochrome c1, Riseke FeS protein, SDS-PAGE Neurospora crassa
7.1.1.8 31000
-
1 * 52000 + 1 * 45000 + 1 * 30000 + 1 * 31000 + 1 * 25000 + 1 * 14000 + 1 * 12000 + 1 * 9000, core protein 1, core protein 2, cytochrome b, cytochrome c1, Riseke FeS protein, SDS-PAGE Neurospora crassa
7.1.1.8 31000
-
1 * 47000 + 1 * 39000 + 2 * 31000 + 1 * 23000 + 1 * 14000 + 1 * 13000 + 1 * 11000, core protein 1, core protein 2, cytochrome b, cytochrome c1, Riseke FeS protein, SDS-PAGE Saccharomyces cerevisiae
7.1.1.8 34000
-
1 * 40000 + 1 * 34000 + 1 * 25000 + 1 + 6000, cytochrome b, cytochrome c1, SDS-PAGE Cereibacter sphaeroides
7.1.1.8 34000
-
1 * 49000 + 1 * 45000 + 1 * 34000 + 1 * 29000 + 1 * 24000 + 1 * 13000 + 1 * 11000, core protein 1, core protein 2, cytochrome b, cytochrome c1, Rieske FeS protein, SDS-PAGE Bos taurus
7.1.1.8 39000
-
1 * 47000 + 1 * 39000 + 2 * 31000 + 1 * 23000 + 1 * 14000 + 1 * 13000 + 1 * 11000, core protein 1, core protein 2, cytochrome b, cytochrome c1, Riseke FeS protein, SDS-PAGE Saccharomyces cerevisiae
7.1.1.8 40000
-
1 * 40000 + 1 * 34000 + 1 * 25000 + 1 + 6000, cytochrome b, cytochrome c1, SDS-PAGE Cereibacter sphaeroides
7.1.1.8 45000
-
1 * 49000 + 1 * 45000 + 1 * 34000 + 1 * 29000 + 1 * 24000 + 1 * 13000 + 1 * 11000, core protein 1, core protein 2, cytochrome b, cytochrome c1, Rieske FeS protein, SDS-PAGE Bos taurus
7.1.1.8 45000
-
1 * 52000 + 1 * 45000 + 1 * 30000 + 1 * 31000 + 1 * 25000 + 1 * 14000 + 1 * 12000 + 1 * 9000, core protein 1, core protein 2, cytochrome b, cytochrome c1, Riseke FeS protein, SDS-PAGE Neurospora crassa
7.1.1.8 47000
-
1 * 47000 + 1 * 39000 + 2 * 31000 + 1 * 23000 + 1 * 14000 + 1 * 13000 + 1 * 11000, core protein 1, core protein 2, cytochrome b, cytochrome c1, Riseke FeS protein, SDS-PAGE Saccharomyces cerevisiae
7.1.1.8 49000
-
1 * 49000 + 1 * 45000 + 1 * 34000 + 1 * 29000 + 1 * 24000 + 1 * 13000 + 1 * 11000, core protein 1, core protein 2, cytochrome b, cytochrome c1, Rieske FeS protein, SDS-PAGE Bos taurus
7.1.1.8 52000
-
1 * 52000 + 1 * 45000 + 1 * 30000 + 1 * 31000 + 1 * 25000 + 1 * 14000 + 1 * 12000 + 1 * 9000, core protein 1, core protein 2, cytochrome b, cytochrome c1, Riseke FeS protein, SDS-PAGE Neurospora crassa

Natural Substrates/ Products (Substrates)

EC Number Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
7.1.1.8 ubiquinone-10 + ferricytochrome c Saccharomyces cerevisiae
-
ubiquinol-10 + ferrocytochrome c + 2 H+
-
?
7.1.1.8 ubiquinone-10 + ferricytochrome c Bos taurus
-
ubiquinol-10 + ferrocytochrome c + 2 H+
-
?
7.1.1.8 ubiquinone-10 + ferricytochrome c Neurospora crassa
-
ubiquinol-10 + ferrocytochrome c + 2 H+
-
?
7.1.1.8 ubiquinone-10 + ferricytochrome c Cereibacter sphaeroides
-
ubiquinol-10 + ferrocytochrome c + 2 H+
-
?
7.1.1.8 ubiquinone-10 + ferricytochrome c Spinacia oleracea
-
ubiquinol-10 + ferrocytochrome c + 2 H+
-
?
7.1.1.8 ubiquinone-10 + ferricytochrome c Trichormus variabilis
-
ubiquinol-10 + ferrocytochrome c + 2 H+
-
?

Organism

EC Number Organism UniProt Comment Textmining
7.1.1.6 Spinacia oleracea
-
-
-
7.1.1.6 Trichormus variabilis
-
-
-
7.1.1.8 Bos taurus
-
-
-
7.1.1.8 Cereibacter sphaeroides
-
formerly Rhodopseudomonas sphaeroides
-
7.1.1.8 Neurospora crassa
-
-
-
7.1.1.8 Saccharomyces cerevisiae
-
bakers'yeast
-
7.1.1.8 Spinacia oleracea
-
spinach
-
7.1.1.8 Trichormus variabilis
-
-
-

Purification (Commentary)

EC Number Purification (Comment) Organism
7.1.1.8
-
Cereibacter sphaeroides

Reaction

EC Number Reaction Comment Organism Reaction ID
7.1.1.6 plastoquinol + 2 oxidized plastocyanin + 2 H+[side 1] = plastoquinone + 2 reduced plastocyanin + 4 H+[side 2] mechanism Spinacia oleracea

Renatured (Commentary)

EC Number Renatured (Comment) Organism
7.1.1.6 enzyme reacts with purified photosystem I reaction centers in the micellar state if plastocyanin is present Spinacia oleracea
7.1.1.6 reconstitution into lipid vesicles Spinacia oleracea
7.1.1.6 reconstitution into lipid vesicles Trichormus variabilis
7.1.1.8
-
Bos taurus
7.1.1.8
-
Neurospora crassa

Source Tissue

EC Number Source Tissue Comment Organism Textmining
7.1.1.6 leaf
-
Spinacia oleracea
-
7.1.1.8 heart
-
Bos taurus
-

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
7.1.1.6 plastoquinol + cytochrome c1
-
Trichormus variabilis plastoquinone + reduced cytochrome c1
-
?
7.1.1.6 plastoquinol + plastocyanin
-
Trichormus variabilis plastoquinone + reduced plastocyanin
-
?
7.1.1.6 plastoquinol + plastocyanin enzyme also reduces algal cytochrome c Spinacia oleracea plastoquinone + reduced plastocyanin
-
?
7.1.1.8 additional information
-
Bos taurus ?
-
?
7.1.1.8 additional information almost inert towards mammalian cytochrome c Spinacia oleracea ?
-
?
7.1.1.8 quinol + 2 ferricytochrome c1
-
Trichormus variabilis quinone + 2 ferrocytochrome c1 + H+ [side 2]
-
?
7.1.1.8 ubiquinol + 2 ferricytochrome c
-
Saccharomyces cerevisiae ubiquinone + 2 ferrocytochrome c + 2 H+
-
?
7.1.1.8 ubiquinol + 2 ferricytochrome c
-
Bos taurus ubiquinone + 2 ferrocytochrome c + 2 H+
-
?
7.1.1.8 ubiquinol + 2 ferricytochrome c
-
Neurospora crassa ubiquinone + 2 ferrocytochrome c + 2 H+
-
?
7.1.1.8 ubiquinol + 2 ferricytochrome c
-
Cereibacter sphaeroides ubiquinone + 2 ferrocytochrome c + 2 H+
-
?
7.1.1.8 ubiquinol + 2 ferricytochrome c
-
Trichormus variabilis ubiquinone + 2 ferrocytochrome c + 2 H+
-
?
7.1.1.8 ubiquinol + 2 ferricytochrome c algal cytochrome c Spinacia oleracea ubiquinone + 2 ferrocytochrome c + 2 H+
-
?
7.1.1.8 ubiquinol + plastocyanin
-
Spinacia oleracea ?
-
?
7.1.1.8 ubiquinone-10 + ferricytochrome c
-
Saccharomyces cerevisiae ubiquinol-10 + ferrocytochrome c + 2 H+
-
?
7.1.1.8 ubiquinone-10 + ferricytochrome c
-
Bos taurus ubiquinol-10 + ferrocytochrome c + 2 H+
-
?
7.1.1.8 ubiquinone-10 + ferricytochrome c
-
Neurospora crassa ubiquinol-10 + ferrocytochrome c + 2 H+
-
?
7.1.1.8 ubiquinone-10 + ferricytochrome c
-
Cereibacter sphaeroides ubiquinol-10 + ferrocytochrome c + 2 H+
-
?
7.1.1.8 ubiquinone-10 + ferricytochrome c
-
Spinacia oleracea ubiquinol-10 + ferrocytochrome c + 2 H+
-
?
7.1.1.8 ubiquinone-10 + ferricytochrome c
-
Trichormus variabilis ubiquinol-10 + ferrocytochrome c + 2 H+
-
?

Subunits

EC Number Subunits Comment Organism
7.1.1.6 More complex consists of the following polypeptides: cytochrome f MW 31000, cytochrome b6 MW 22000, Rieske FeS protein MW 22000, and a polypeptide with the molecular weight of 16000, SDS-PAGE Trichormus variabilis
7.1.1.6 More complex consists of the following polypeptides: cytochrome f MW 33000, cytochrome b6 MW 23000, Rieske FeS protein MW 20000, and a polypeptide with the molecular weight of 17000, SDS-PAGE Spinacia oleracea
7.1.1.6 More ratio cytochrome b563:cytochrome f:Rieske Fe-S protein 2:1:1 Trichormus variabilis
7.1.1.8 oligomer 1 * 23000 + 1 * 33000/34000 + 1 * 20000 + 1 * 17000 + 1 * 5000, cytochrome b, cytochrome f, Rieske FeS protein, SDS-PAGE Spinacia oleracea
7.1.1.8 oligomer 1 * 40000 + 1 * 34000 + 1 * 25000 + 1 + 6000, cytochrome b, cytochrome c1, SDS-PAGE Cereibacter sphaeroides
7.1.1.8 oligomer 1 * 49000 + 1 * 45000 + 1 * 34000 + 1 * 29000 + 1 * 24000 + 1 * 13000 + 1 * 11000, core protein 1, core protein 2, cytochrome b, cytochrome c1, Rieske FeS protein, SDS-PAGE Bos taurus
7.1.1.8 oligomer 1 * 52000 + 1 * 45000 + 1 * 30000 + 1 * 31000 + 1 * 25000 + 1 * 14000 + 1 * 12000 + 1 * 9000, core protein 1, core protein 2, cytochrome b, cytochrome c1, Riseke FeS protein, SDS-PAGE Neurospora crassa
7.1.1.8 oligomer 1 * 22500 + 1 * 31000/38000 + 1 * 22000 + 1 * 16000 + 1 * 8000, cytochrome b, cytochrome f, Rieske FeS protein, SDS-PAGE Trichormus variabilis
7.1.1.8 oligomer 1 * 47000 + 1 * 39000 + 2 * 31000 + 1 * 23000 + 1 * 14000 + 1 * 13000 + 1 * 11000, core protein 1, core protein 2, cytochrome b, cytochrome c1, Riseke FeS protein, SDS-PAGE Saccharomyces cerevisiae
7.1.1.8 oligomer 1 * 23000 + 1 * 33000/34000 + 1 * 20000 + 1 * 17000 + 1 * 5000, cytochrome b, cytochrome c1, Rieske FeS protein, SDS-PAGE Spinacia oleracea

Turnover Number [1/s]

EC Number Turnover Number Minimum [1/s] Turnover Number Maximum [1/s] Substrate Comment Organism Structure
7.1.1.6 additional information
-
additional information
-
Spinacia oleracea
7.1.1.6 additional information
-
additional information
-
Trichormus variabilis
7.1.1.6 0.333
-
cytochrome c1
-
Trichormus variabilis
7.1.1.8 0.133
-
cytochrome c1
-
Cereibacter sphaeroides
7.1.1.8 0.333
-
2 ferricytochrome c1
-
Trichormus variabilis
7.1.1.8 3.33
-
cytochrome c1
-
Saccharomyces cerevisiae
7.1.1.8 66.7
-
cytochrome c1
-
Bos taurus

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
7.1.1.6 8
-
-
Spinacia oleracea
7.1.1.6 8
-
-
Trichormus variabilis

Cofactor

EC Number Cofactor Comment Organism Structure
7.1.1.6 heme
-
Spinacia oleracea
7.1.1.6 heme two heme-carrying polypeptides per enzyme Trichormus variabilis
7.1.1.8 cytochrome c1
-
Bos taurus
7.1.1.8 cytochrome c1
-
Neurospora crassa
7.1.1.8 cytochrome c1
-
Cereibacter sphaeroides