Sulfotransferase
| Sulfotransferase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
Crystal Structure of Human Sulfotransferase SULT1A3 in Complex with Dopamine and 3-Phosphoadenosine 5-Phosphate | |||||||||
| Identifiers | |||||||||
| EC no. | 2.8.2.- | ||||||||
| Databases | |||||||||
| IntEnz | IntEnz view | ||||||||
| BRENDA | BRENDA entry | ||||||||
| ExPASy | NiceZyme view | ||||||||
| KEGG | KEGG entry | ||||||||
| MetaCyc | metabolic pathway | ||||||||
| PRIAM | profile | ||||||||
| PDB structures | RCSB PDB PDBe PDBsum | ||||||||
| |||||||||
In biochemistry, sulfotransferases (SULTs) are transferase enzymes that catalyze the transfer of a sulfo group (R−SO−3) from a donor molecule to an acceptor alcohol (R−OH) or amine (R−NH2). The most common sulfo group donor is 3'-phosphoadenosine-5'-phosphosulfate (PAPS). In the case of alcohol as acceptor, the product is a sulfate (R−OSO−3):
![{\displaystyle {\ce {R-SO3-}}\ +\ {\ce {R'-OH}}\quad {\xrightarrow[{\text{ SULT }}]{}}\quad {\ce {R-H}}\ +\ {\ce {R'-OSO3-}}}](./309f6adbd894014d72d03faf7b24c04b81e1f235.svg)
whereas an amine leads to a sulfamate (R−NH−SO−3):
![{\displaystyle {\ce {R-SO3-}}\ +\ {\ce {R'-NH2}}\quad {\xrightarrow[{\text{ SULT }}]{}}\quad {\ce {R-H}}\ +\ {\ce {R'-NHSO3-}}}](./b5606063c04db8ea36fe2dd0674ec64f45c93be9.svg)
Both reactive groups for a sulfonation via sulfotransferases may be part of a protein, lipid, carbohydrate or steroid.