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Literature summary extracted from

  • Kriauciunas, A.; Yu, L.; Yu, C.A.; Wynn, R.M.; Knaff, D.B.
    The Rhodospirillum rubrum cytochrome bc1 complex: peptide composition, prosthetic group content and quinone binding (1989), Biochim. Biophys. Acta, 976, 70-76.
    View publication on PubMed

Inhibitors

EC Number Inhibitors Comment Organism Structure
7.1.1.8 3-[3H]azido-2-methyl-5-methoxy-6-geranyl-1,4-benzoquinone azidoQ Rhodospirillum rubrum
7.1.1.8 antimycin A
-
Cereibacter sphaeroides
7.1.1.8 antimycin A
-
Rhodospirillum rubrum
7.1.1.8 Myxothiazol
-
Cereibacter sphaeroides
7.1.1.8 Myxothiazol
-
Rhodospirillum rubrum

Metals/Ions

EC Number Metals/Ions Comment Organism Structure
7.1.1.8 Iron-sulfur cluster
-
Cereibacter sphaeroides
7.1.1.8 Iron-sulfur cluster
-
Rhodospirillum rubrum

Molecular Weight [Da]

EC Number Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
7.1.1.8 22400
-
1 * 35000 + 1 * 31000 + 1 * 22400, cytochrome b, cytochrome c1 and Rieske iron-sulfur protein, SDS-PAGE Rhodospirillum rubrum
7.1.1.8 31000
-
1 * 35000 + 1 * 31000 + 1 * 22400, cytochrome b, cytochrome c1 and Rieske iron-sulfur protein, SDS-PAGE Rhodospirillum rubrum
7.1.1.8 35000
-
1 * 35000 + 1 * 31000 + 1 * 22400, cytochrome b, cytochrome c1 and Rieske iron-sulfur protein, SDS-PAGE Rhodospirillum rubrum
7.1.1.8 88400
-
calculation from subunit composition, assuming stoechiometry of 1:1:1 Rhodospirillum rubrum

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 Cereibacter sphaeroides
-
ubiquinol-10 + ferrocytochrome c + 2 H+
-
?
7.1.1.8 ubiquinone-10 + ferricytochrome c Rhodobacter capsulatus
-
ubiquinol-10 + ferrocytochrome c + 2 H+
-
?
7.1.1.8 ubiquinone-10 + ferricytochrome c Rhodospirillum rubrum
-
ubiquinol-10 + ferrocytochrome c + 2 H+
-
?

Organism

EC Number Organism UniProt Comment Textmining
7.1.1.8 Cereibacter sphaeroides
-
-
-
7.1.1.8 Rhodobacter capsulatus
-
-
-
7.1.1.8 Rhodospirillum rubrum
-
-
-

Purification (Commentary)

EC Number Purification (Comment) Organism
7.1.1.8
-
Rhodospirillum rubrum

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
7.1.1.8 2,3-dimethoxy-5-methyl-6-(10-bromodecyl)-1,4-benzoquinol + 2 ferricytochrome c
-
Rhodospirillum rubrum 2,3-dimethoxy-5-methyl-6-(10-bromodecyl)-1,4-benzoquinone + ferrocytochrome c + 2 H+[side 2]
-
?
7.1.1.8 quinol + 2 ferricytochrome c1
-
Rhodospirillum rubrum quinone + 2 ferrocytochrome c1 + H+ [side 2]
-
?
7.1.1.8 ubiquinol + 2 ferricytochrome c
-
Cereibacter sphaeroides ubiquinone + 2 ferrocytochrome c + 2 H+
-
?
7.1.1.8 ubiquinol + 2 ferricytochrome c
-
Rhodobacter capsulatus ubiquinone + 2 ferrocytochrome c + 2 H+
-
?
7.1.1.8 ubiquinol + 2 ferricytochrome c
-
Rhodospirillum rubrum ubiquinone + 2 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
-
Rhodobacter capsulatus ubiquinol-10 + ferrocytochrome c + 2 H+
-
?
7.1.1.8 ubiquinone-10 + ferricytochrome c
-
Rhodospirillum rubrum ubiquinol-10 + ferrocytochrome c + 2 H+
-
?

Subunits

EC Number Subunits Comment Organism
7.1.1.8 trimer
-
Cereibacter sphaeroides
7.1.1.8 trimer
-
Rhodobacter capsulatus
7.1.1.8 trimer 1 * 35000 + 1 * 31000 + 1 * 22400, cytochrome b, cytochrome c1 and Rieske iron-sulfur protein, SDS-PAGE Rhodospirillum rubrum

Turnover Number [1/s]

EC Number Turnover Number Minimum [1/s] Turnover Number Maximum [1/s] Substrate Comment Organism Structure
7.1.1.8 1.25
-
2 ferricytochrome c1
-
Rhodospirillum rubrum
7.1.1.8 66.7
-
2,3-Dimethoxy-5-methyl-6-(10-bromodecyl)-1,4-benzoquinol
-
Rhodospirillum rubrum

Cofactor

EC Number Cofactor Comment Organism Structure
7.1.1.8 bacteriochlorophyll
-
Rhodospirillum rubrum
7.1.1.8 cytochrome b
-
Cereibacter sphaeroides
7.1.1.8 cytochrome b protoheme Rhodospirillum rubrum
7.1.1.8 cytochrome c1
-
Cereibacter sphaeroides
7.1.1.8 cytochrome c1 heme c Rhodospirillum rubrum