Adenylyl-sulfate reductase
Adenylyl-sulfate reductase (EC 1.8.99.2) is an enzyme that catalyzes the chemical reaction
- AMP + sulfite + acceptor adenylyl sulfate + reduced acceptor
| adenylyl-sulfate reductase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
 adenylyl-sulfate reductase heterotetramer, Archaeoglobus fulgidus | |||||||||
| Identifiers | |||||||||
| EC number | 1.8.99.2 | ||||||||
| CAS number | 9027-75-2 | ||||||||
| Databases | |||||||||
| IntEnz | IntEnz view | ||||||||
| BRENDA | BRENDA entry | ||||||||
| ExPASy | NiceZyme view | ||||||||
| KEGG | KEGG entry | ||||||||
| MetaCyc | metabolic pathway | ||||||||
| PRIAM | profile | ||||||||
| PDB structures | RCSB PDB PDBe PDBsum | ||||||||
| Gene Ontology | AmiGO / QuickGO | ||||||||
| |||||||||
The 3 substrates of this enzyme are AMP, sulfite, and an acceptor, whereas its two products are adenylyl sulfate and a reduced acceptor.
This enzyme belongs to the family of oxidoreductases, specifically those acting on a sulfur group of donors with other acceptors. The systematic name of this enzyme class is AMP, sulfite:acceptor oxidoreductase (adenosine-5'-phosphosulfate-forming). Other names in common use include adenosine phosphosulfate reductase, adenosine 5'-phosphosulfate reductase, APS-reductase, APS reductase, AMP, sulfite:(acceptor) oxidoreductase, and (adenosine-5'-phosphosulfate-forming). This enzyme participates in selenoamino acid metabolism and sulfur metabolism. It has 2 cofactors: FAD, and Iron.
Structural studies
As of late 2014, 6 structures have been solved for this class of enzymes, with PDB accession codes 1JNR, 1JNZ, 2FJA, 2FJB, 2FJD, and 2FJE.
References
- Michaels GB, Davidson JT, Peck HD Jr (1970). "A flavin-sulfite adduct as an intermediate in the reaction catalyzed by adenylyl sulfate reductase from Desulfovibrio vulgaris". Biochem. Biophys. Res. Commun. 39 (3): 321–8. doi:10.1016/0006-291X(70)90579-6. PMID 5421934.