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Literature summary extracted from

  • Christenson, A.; Gustavsson, T.; Gorton, L.; Haegerhaell, C.
    Direct and mediated electron transfer between intact succinate:quinone oxidoreductase from Bacillus subtilis and a surface modified gold electrode reveals redox state-dependent conformational changes (2008), Biochim. Biophys. Acta, 1777, 1203-1210.
    View publication on PubMed

Inhibitors

EC Number Inhibitors Comment Organism Structure
1.3.5.1 2-n-heptyl-4 hydroxyquinoline N-oxide a specific inhibitor, i.e. HQNO, which binds to quinone binding site Qd in SQR Bacillus subtilis
1.3.5.1 oxaloacetate an inhibitor of the succinate binding site Bacillus subtilis

Localization

EC Number Localization Comment Organism GeneOntology No. Textmining
1.3.5.1 membrane
-
 Bacillus subtilis 16020
-

Natural Substrates/ Products (Substrates)

EC Number Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
1.3.5.1 succinate + ubiquinone Bacillus subtilis
-
 fumarate + ubiquinol
-
 ?
1.3.5.1 succinate + ubiquinone Bacillus subtilis 3G18
-
 fumarate + ubiquinol
-
 ?

Organism

EC Number Organism UniProt Comment Textmining
1.3.5.1 Bacillus subtilis
-
 harbors the entire sdh operon on a low copy number plasmid
-
1.3.5.1 Bacillus subtilis 3G18
-
 harbors the entire sdh operon on a low copy number plasmid
-

Purification (Commentary)

EC Number Purification (Comment) Organism
1.3.5.1 enzyme from membranes of strain 3G18, expressed from low copy plasmid Bacillus subtilis

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
1.3.5.1 additional information electronic communication between purified SQR and a surface modified gold capillary electrode, redox titrations, overview Bacillus subtilis ?
-
 ?
1.3.5.1 additional information electronic communication between purified SQR and a surface modified gold capillary electrode, redox titrations, overview Bacillus subtilis 3G18 ?
-
 ?
1.3.5.1 succinate + 2,6-dichlorophenolindophenol
-
 Bacillus subtilis fumarate + reduced 2,6-dichlorophenolindophenol
-
 ?
1.3.5.1 succinate + 2,6-dichlorophenolindophenol
-
 Bacillus subtilis 3G18 fumarate + reduced 2,6-dichlorophenolindophenol
-
 ?
1.3.5.1 succinate + ubiquinone
-
 Bacillus subtilis fumarate + ubiquinol
-
 ?
1.3.5.1 succinate + ubiquinone
-
 Bacillus subtilis 3G18 fumarate + ubiquinol
-
 ?

Subunits

EC Number Subunits Comment Organism
1.3.5.1 More the enzyme from Bacillus subtilis consists of two hydrophilic protein subunits comprising succinate dehydrogenase, and a di-heme membrane anchor protein harboring two putative quinone binding sites, overview Bacillus subtilis

Synonyms

EC Number Synonyms Comment Organism
1.3.5.1 SQR
-
 Bacillus subtilis
1.3.5.1 succinate:quinone oxidoreductase
-
 Bacillus subtilis

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
1.3.5.1 7.4
-
 assay at Bacillus subtilis

Cofactor

EC Number Cofactor Comment Organism Structure
1.3.5.1 2,6-dichlorophenolindophenol
-
 Bacillus subtilis
1.3.5.1 heme in a di-heme membrane anchor protein harboring two putative quinone binding sites Bacillus subtilis
1.3.5.1 ubiquinone two putative binding sites in the di-heme membrane anchoring protein Bacillus subtilis