Evidence map›Paper›PMID 21822452›Full record

ArticleHormone molecular biology and clinical investigation2010

Structural rearrangement of SULT2A1: effects on dehydroepiandrosterone and raloxifene sulfation.

Ian T Cook, Thomas S Leyh, Susan A Kadlubar, Charles N Falany

Abstract read
In one paragraph

Article in Hormone molecular biology and clinical investigation, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

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0cells of the map it votes in
24citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

24 citing papers in PubMed.

  1. Review
  2. Article
  3. Article
  4. Article
  5. Article
  6. On the Molecular Basis Underlying the Metabolism of Tapentadol Through Sulfation.European journal of drug metabolism and pharmacokinetics · 2017
    Article
  7. Article
  8. Modification ofDrug target insights · 2017
    Article
  9. Article
  10. Article
  11. Celecoxib influences steroid sulfonation catalyzed by human recombinant sulfotransferase 2A1.The Journal of steroid biochemistry and molecular biology · 2015
    Article
  12. Article
  13. Review
  14. High accuracy in silico sulfotransferase models.The Journal of biological chemistry · 2013
    Article
  15. Review
  16. Testing the sulfotransferase molecular pore hypothesis.The Journal of biological chemistry · 2013
    Article
  17. Article
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

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5 · Who and what money

Authors and funding

4 authors.

Ian T CookDepartment of Pharmacology and Toxicology, University of Alabama at Birmingham, Birmingham, AL, USA.
Thomas S Leyh
Susan A Kadlubar
Charles N Falany

Funding

SULFATE ADENYLATION-BIOCHEMISTRY &ENZYMOLOGYR01GM054469 · NIGMS · YESHIVA UNIVERSITY · PI LEYH, THOMAS S. · 1995 to 2011
$4.7M
HUMAN CYTOSOLIC SULFOTRANSFERASESR01GM038953 · NIGMS · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI FALANY, CHARLES N · 1992 to 2013
$3.3M
Regulation of SULT1A1 in Human BreastR01CA128897 · NCI · UNIV OF ARKANSAS FOR MED SCIS · PI KADLUBAR, SUSAN A. · 2008 to 2012
$2.0M
HUMAN PLATELET PHENOL SULFOTRANSFERASESR29GM038953 · NIGMS · UNIVERSITY OF ROCHESTER · PI FALANY, CHARLES N · 1987 to 1991
–
NCI NIH HHS R01 CA128897NIGMS NIH HHS R01 GM038953NIGMS NIH HHS R01 GM054469
6 · The paper itself

Abstract

backgroundHuman cytosoloic sulfotransferase (SULT) 2A1 is a major hepatic isoform and sulfates hydroxyl groups in structurally diverse sterols and xenobiotics. SULT2A1 crystal structures resolved in the presence and absence of 3',5'-diphosphoadenosine (PAP) or dehydropeiandrosterone (DHEA) suggest a significant rearrangement of the peptide that forms the surface of the active site in the presence of PAP. MATERIALS AND

methodsMolecular modeling was used to examine the effects of the rearrangement in SULT2A1 associated with 3'-phosphoadenosine 5'-phosphosulfate (PAPS) binding on the binding of DHEA and raloxifene. The kinetics of DHEA and raloxifene sulfation was analyzed to investigate the effects of the rearrangement on SULT2A1 activity.

resultsMolecular models indicate that DHEA is able to bind to SULT2A1 in both conformations (open, without PAP; closed, with PAP) in a catalytic configuration, whereas raloxifene bound in a catalytic conformation only in the open structure. Raloxifene did not bind in the smaller, closed substrate binding pocket. Kinetic analysis of DHEA sulfation was consistent with a random Bi-Bi reaction mechanism, whereas raloxifene sulfation was more indicative of an ordered reaction mechanism with raloxifene binding first. Initial burst kinetics with DHEA yielded similar results after preincubation of SULT2A1 with DHEA or PAPS. Preincubation of SULT2A1 with raloxifene showed a burst of raloxifene sulfate formation with the addition of PAPS. In contrast, little raloxifene sulfate was formed if SULT2A1 was preincubated with PAPS and the reaction initiated with raloxifene.

conclusionsThe structural rearrangements in SULT2A1 caused by PAPS binding can alter the sulfation mechanism and kinetics of different substrates.

Identifiers

PMID21822452
PMCPMC3149901

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