Enzymes
UniProtKB help_outline | 2 proteins |
Reaction participants Show >> << Hide
- Name help_outline 4-methylumbelliferone sulfate Identifier CHEBI:144581 Charge -1 Formula C10H7O6S InChIKeyhelp_outline FUYLLJCBCKRIAL-UHFFFAOYSA-M SMILEShelp_outline [O-]S(OC=1C=C2OC(C=C(C2=CC1)C)=O)(=O)=O 2D coordinates Mol file for the small molecule Search links Involved in 2 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline phenol Identifier CHEBI:15882 (Beilstein: 969616; CAS: 108-95-2) help_outline Charge 0 Formula C6H6O InChIKeyhelp_outline ISWSIDIOOBJBQZ-UHFFFAOYSA-N SMILEShelp_outline Oc1ccccc1 2D coordinates Mol file for the small molecule Search links Involved in 24 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline 4-methylumbelliferone Identifier CHEBI:17224 (Beilstein: 142217; CAS: 90-33-5) help_outline Charge 0 Formula C10H8O3 InChIKeyhelp_outline HSHNITRMYYLLCV-UHFFFAOYSA-N SMILEShelp_outline C1=2OC(=O)C=C(C1=CC=C(C2)O)C 2D coordinates Mol file for the small molecule Search links Involved in 3 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline phenyl sulfate Identifier CHEBI:85289 Charge -1 Formula C6H5O4S InChIKeyhelp_outline CTYRPMDGLDAWRQ-UHFFFAOYSA-M SMILEShelp_outline [O-]S(=O)(=O)Oc1ccccc1 2D coordinates Mol file for the small molecule Search links Involved in 2 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
RHEA:79263 | RHEA:79264 | RHEA:79265 | RHEA:79266 | |
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Reaction direction help_outline | undefined | left-to-right | right-to-left | bidirectional |
UniProtKB help_outline |
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Related reactions help_outline
More general form(s) of this reaction
Publications
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A structural and biochemical basis for PAPS-independent sulfuryl transfer by aryl sulfotransferase from uropathogenic Escherichia coli.
Malojcic G., Owen R.L., Grimshaw J.P., Brozzo M.S., Dreher-Teo H., Glockshuber R.
Sulfotransferases are a versatile class of enzymes involved in numerous physiological processes. In mammals, adenosine 3'-phosphate-5'-phosphosulfate (PAPS) is the universal sulfuryl donor, and PAPS-dependent sulfurylation of small molecules, including hormones, sugars, and antibiotics, is a criti ... >> More
Sulfotransferases are a versatile class of enzymes involved in numerous physiological processes. In mammals, adenosine 3'-phosphate-5'-phosphosulfate (PAPS) is the universal sulfuryl donor, and PAPS-dependent sulfurylation of small molecules, including hormones, sugars, and antibiotics, is a critical step in hepatic detoxification and extracellular signaling. In contrast, little is known about sulfotransferases in bacteria, which make use of sulfurylated molecules as mediators of cell-cell interactions and host-pathogen interactions. Bacterial arylsulfate sulfotransferases (also termed aryl sulfotransferases), in contrast to PAPS-dependent sulfotransferases, transfer sulfuryl groups exclusively among phenolic compounds in a PAPS-independent manner. Here, we report the crystal structure of the virulence factor arylsulfate sulfotransferase (ASST) from the prototypic, pyelonephritogenic Escherichia coli strain CFT073 at 2.0-A resolution, and 2 catalytic intermediates, at 2.1-A and 2.4-A resolution, with substrates bound in the active site. ASST is one of the largest periplasmic enzymes and its 3D structure differs fundamentally from all other structurally characterized sulfotransferases. Each 63.8-kDa subunit of the ASST homodimer comprises a 6-bladed beta-propeller domain and a C-terminal beta-sandwich domain. The active sites of the dimer are situated at the center of the channel formed by each beta-propeller and are defined by the side chains of His-252, His-356, Arg-374, and His-436. We show that ASST follows a ping-pong bi-bi reaction mechanism, in which the catalytic residue His-436 undergoes transient sulfurylation, a previously unreported covalent protein modification. The data provide a framework for understanding PAPS-independent sulfotransfer and a basis for drug design targeting this bacterial virulence factor. << Less
Proc. Natl. Acad. Sci. U.S.A. 105:19217-19222(2008) [PubMed] [EuropePMC]
This publication is cited by 1 other entry.
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Molecular cloning of the arylsulfate sulfotransferase gene and characterization of its product from Enterobacter amnigenus AR-37.
Kwon A.-R., Oh T.-G., Kim D.-H., Choi E.-C.
The gene encoding the Enterobacter amnigenus AR-37 arylsulfate sulfotransferase (ASST) was cloned, sequenced, and expressed in Escherichia coli NM522. Sequencing led to the identification of three contiguous open reading frames (ORFs) on the same strand. Based on amino acid sequence homology, ORF1 ... >> More
The gene encoding the Enterobacter amnigenus AR-37 arylsulfate sulfotransferase (ASST) was cloned, sequenced, and expressed in Escherichia coli NM522. Sequencing led to the identification of three contiguous open reading frames (ORFs) on the same strand. Based on amino acid sequence homology, ORF1, ORF2, and ORF3 are designated astA, dsbA, and dsbB, respectively. A multiple sequence alignment revealed conserved regions in ASST. An N-terminal amino acid sequence analysis of the purified ASST from E. coli NM522 (pEAST72) showed that it is subject to N-terminal processing. The specific activity of purified ASST is 436.5 U/mg of protein. The enzyme is a monomeric protein with a molecular mass of 64 kDa. Using phenol as an acceptor substrate, 4-methylumbelliferyl sulfate is the best donor substrate, followed by beta-naphthyl sulfate, p-nitrophenyl sulfate (PNS), and alpha-naphthyl sulfate. For PNS, alpha-naphthol is the best acceptor substrate, followed by phenol, resorcinol, p-acetaminophen, tyramine, and tyrosine. The enzyme has a different acceptor specificity than the enzyme purified from Eubacterium A-44. It is similar to Klebsiella K-36 and Haemophilus K-12. The apparent K(m) values for PNS using phenol as an acceptor and for phenol using PNS as a donor are 0.163 and 0.314 mM, respectively. The pI and optimum pH are 6.1 and 9.0, respectively. << Less
Protein Expr. Purif. 17:366-372(1999) [PubMed] [EuropePMC]
This publication is cited by 1 other entry.