IUBMB Enzyme Nomenclature


Accepted name: bile-salt sulfotransferase

Reaction: (1) 3'-phosphoadenylyl sulfate + glycolithocholate = adenosine 3',5'-bisphosphate + glycolithocholate 3-sulfate

(2) 3'-phosphoadenylyl sulfate + taurolithocholate = adenosine 3',5'-bisphosphate + taurolithocholate sulfate

For diagram click here or here.

Glossary: 3'-phosphoadenylyl sulfate = PAPS
glycolithocholate sulfate = N-(3α-sulfooxy-5β-cholan-24-oyl)glycine

Other name(s): BAST I; bile acid:3'-phosphoadenosine-5'-phosphosulfate sulfotransferase; bile salt:3'phosphoadenosine-5'-phosphosulfate:sulfotransferase; bile acid sulfotransferase I; glycolithocholate sulfotransferase; 3'-phosphoadenylyl-sulfate:glycolithocholate sulfotransferase

Systematic name: 3'-phosphoadenylyl-sulfate:glycolithocholate sulfotnoransferase

Comments: The formation of sulfate esters of bile acids is an essential step in the prevention of toxicity by monohydroxy bile acids in many species [3]. This enzyme is both a bile salt and a 3-hydroxysteroid sulfotransferase. In addition to the 5β-bile acid glycolithocholate, deoxycholate, 3β-hydroxy-5-cholenoate and dehydroepiandrosterone (3β-hydroxyandrost-5-en-17-one) also act as substrates [see also EC (alcohol sulfotransferase) and EC (glycochenodeoxycholate sulfotransferase)]. May be identical to EC [3].

Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, PDB, CAS registry number: 65802-92-8


1. Chen, L.-J., Bolt, R.J. and Admirand, W.H. Enzymatic sulfation of bile salts. Partial purification and characterization of an enzyme from rat liver that catalyzes the sulfation of bile salts. Biochim. Biophys. Acta 480 (1977) 219-227. [PMID: 831833]

2. Barnes, S., Waldrop, R., Crenshaw, J., King, R.J. and Taylor, K.B. Evidence for an ordered reaction mechanism for bile salt: 3'phosphoadenosine-5'-phosphosulfate: sulfotransferase from rhesus monkey liver that catalyzes the sulfation of the hepatotoxin glycolithocholate. J. Lipid Res. 27 (1986) 1111-1123. [PMID: 3470420]

3. Barnes, S., Buchina, E.S., King, R.J., McBurnett, T. and Taylor, K.B. Bile acid sulfotransferase I from rat liver sulfates bile acids and 3-hydroxy steroids: purification, N-terminal amino acid sequence, and kinetic properties. J. Lipid Res. 30 (1989) 529-540. [PMID: 2754334]

4. Russell, D.W. The enzymes, regulation, and genetics of bile acid synthesis. Annu. Rev. Biochem. 72 (2003) 137-174. [PMID: 12543708]

[EC created 1978, modified 2005]

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