ENZYME entry: EC 1.10.3.10
| Accepted Name |
|---|
| Ubiquinol oxidase (H(+)-transporting).
|
| Alternative Name(s) |
|---|
| Cytochrome bb3 oxidase. |
| Cytochrome bd-II oxidase. |
| Cytochrome bo oxidase. |
| Reaction catalysed |
|---|
| 2 ubiquinol + O(2) + n H(+)(Side 1) <=> 2 ubiquinone + 2 H(2)O + n H(+)(Side 2) |
| Cofactor(s) |
|---|
| Cu cation; Heme.
|
| Comment(s) |
|---|
- This terminal oxidase enzyme generates proton motive force by two
mechanisms: (1) transmembrane charge separation resulting from
utilizing protons and electrons originating from opposite sides of
the membrane to generate water, and (2) active pumping of protons
across the membrane.
- The bioenergetic efficiency (the number of charges driven across the
membrane per electron used to reduce oxygen to water) depends on the
enzyme; for example, for the bo(3) oxidase it is 2, while for the
bd-II oxidase it is 1.
- Cf. EC 1.10.3.14.
|
| Cross-references |
|---|
| BRENDA | 1.10.3.10 |
| EC2PDB | 1.10.3.10 |
| ExplorEnz | 1.10.3.10 |
| PRIAM enzyme-specific profiles | 1.10.3.10 |
| KEGG Ligand Database for Enzyme Nomenclature | 1.10.3.10 |
| IUBMB Enzyme Nomenclature | 1.10.3.10 |
| IntEnz | 1.10.3.10 |
| MEDLINE | Find literature relating to 1.10.3.10 |
| MetaCyc | 1.10.3.10 |
| UniProtKB/Swiss-Prot |
| P26458, APPB_ECOLI; | P26459, APPC_ECOLI; | P57543, CYOB_BUCAI; |
| Q8K994, CYOB_BUCAP; | Q89AA4, CYOB_BUCBP; | P0ABJ0, CYOB_ECO57; |
| P0ABI9, CYOB_ECOL6; | P0ABI8, CYOB_ECOLI; | Q9I426, CYOB_PSEAE; |
| Q9WWR2, CYOB_PSEPU; |
|
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