CATH Classification
| Level | CATH Code | Description |
|---|---|---|
|
3 | Alpha Beta |
|
3.50 | 3-Layer(bba) Sandwich |
|
3.50.50 | FAD/NAD(P)-binding domain |
|
3.50.50.100 |
Domain Context
CATH Clusters
| Superfamily | 3.50.50.100 |
| Functional Family | Sulfide-quinone reductase |
Enzyme Information
| 1.8.5.4 |
Bacterial sulfide:quinone reductase.
based on mapping to UniProt O67931
n sulfide + n quinone = polysulfide + n quinol.
-!- Ubiquinone, plastoquinone or menaquinone can act as acceptor in different species. -!- This enzyme catalyzes the formation of sulfur globules. -!- It repeats the catalytic cycle without releasing the product, producing a polysulfide of up to 10 sulfur atoms. -!- The reaction stops when the maximum length of the polysulfide that can be accommodated in the sulfide oxidation pocket is achieved. -!- The enzyme also plays an important role in anoxygenic bacterial photosynthesis. -!- Cf. EC 1.8.5.8.
|
UniProtKB Entries (1)
| O67931 |
SQRD_AQUAE
Aquifex aeolicus VF5
Sulfide-quinone reductase
|
PDB Structure
| PDB | 3HYX |
| External Links | |
| Method | X-RAY DIFFRACTION |
| Organism | |
| Primary Citation |
The structure of Aquifex aeolicus sulfide:quinone oxidoreductase, a basis to understand sulfide detoxification and respiration
Proc.Natl.Acad.Sci.USA
|