CATH Classification
| Level | CATH Code | Description |
|---|---|---|
|
3 | Alpha Beta |
|
3.40 | 3-Layer(aba) Sandwich |
|
3.40.50 | Rossmann fold |
|
3.40.50.300 | P-loop containing nucleotide triphosphate hydrolases |
Domain Context
CATH Clusters
| Superfamily | P-loop containing nucleotide triphosphate hydrolases |
| Functional Family | Adenylyl-sulfate kinase |
Enzyme Information
| 2.7.1.25 |
Adenylyl-sulfate kinase.
based on mapping to UniProt Q43295
ATP + adenylyl sulfate = ADP + 3'-phosphoadenylyl sulfate.
-!- The human phosphoadenosine-phosphosulfate synthase (PAPS) system is a bifunctional enzyme: ATP sulfurylase, which catalyzes the formation of adenosine 5'-phosphosulfate (APS) from ATP and inorganic sulfate and the second step is catalyzed by the APS kinase portion of 3'-phosphoadenosine 5'-phosphosulfate (PAPS) synthase, which involves the formation of PAPS from enzyme bound APS and ATP. -!- This is in contrast to what is found in bacteria, yeasts, fungi and plants, where the formation of PAPS is carried out by two individual polypeptides, EC 2.7.7.4 and EC 2.7.1.25.
|
UniProtKB Entries (1)
| Q43295 |
APK1_ARATH
Arabidopsis thaliana
Adenylyl-sulfate kinase 1, chloroplastic
|
PDB Structure
| PDB | 3UIE |
| External Links | |
| Method | X-RAY DIFFRACTION |
| Organism | |
| Primary Citation |
Structural basis and evolution of redox regulation in plant adenosine-5'-phosphosulfate kinase.
Proc.Natl.Acad.Sci.USA
|
