CATH Classification

Domain Context

CATH Clusters

Superfamily Sulfate adenylyltransferase
Functional Family

Enzyme Information

2.7.7.4
Sulfate adenylyltransferase.
based on mapping to UniProt Q54506
ATP + sulfate = diphosphate + adenylyl 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)

Q54506
SAT_RIFPS
Sulfur-oxidizing endosymbiont of Riftia pachyptila
Sulfate adenylyltransferase

PDB Structure

PDB 1JHD
External Links
Method X-RAY DIFFRACTION
Organism Escherichia
Primary Citation
Crystal structure of ATP sulfurylase from the bacterial symbiont of the hydrothermal vent tubeworm Riftia pachyptila.
Beynon, J.D., MacRae, I.J., Huston, S.L., Nelson, D.C., Segel, I.H., Fisher, A.J.
Biochemistry
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