| Synonyms |
3′-phospho-adenosine-5′-phosphosulphate synthase, 3′-phosphoadenosine-5′-phosphosulfate synthase, AcATPS1, adenosine 5′-triphosphate sulphurylase, adenosine 5′-triphosphate-sulfurylase, adenosine triphosphate sulfurylase, adenosine triphosphate sulphurylase, adenosine triphosphate-sulphurylase, adenosine-5′-triphosphate sulfurylase, adenosinetriphosphate sulfurylase, adenylsulfurylase, adenylylsulfate pyrophosphorylase, adenylyltransferase, sulfate, APS1, APS2, ATP sulfurylase, ATP sulfurylase 1, ATP sulfurylase 2, ATP sulfurylase 3, ATP sulfurylase 4, ATP sulfurylase isoform 1, ATP sulfurylase-APS kinase, ATP sulphurylase, ATP-S, ATP-sulfurylase, ATP: sulfate adenylyl transferase, ATPS, ATPS-A, ATPS-B, ATPS1, ATPS2, CysD, dissimilatory ATP sulfurylase, MgATP:sulfate adenylyltransferase, MgATP:sulfate adenylyltransferase,, PAPS synthase, PAPS synthase 1, PAPS synthase 2, PAPS synthase1, PAPS synthase2, PAPSS1, PAPSs2, SAT, sulfurylase, TtATPS |
| Comments |
The human phosphoadenosine-phosphosulfate synthase (PAPS) system is a bifunctional enzyme (fusion product of two catalytic activities). In a first step, sulfate adenylyltransferase catalyses the formation of adenosine 5′-phosphosulfate (APS) from ATP and inorganic sulfate. The second step is catalysed by the adenylylsulfate kinase portion of 3′-phosphoadenosine 5′-phosphosulfate (PAPS) synthase, which involves the formation of PAPS from enzyme-bound APS and ATP. In contrast, in bacteria, yeast, fungi and plants, the formation of PAPS is carried out by two individual polypeptides, sulfate adenylyltransferase (EC?2.7.7.4) and adenylyl-sulfate kinase (EC?2.7.1.25). |
