Cited by 221Pharmacogenetics and Drug MetabolismEstrogen and related hormone effectsSteroid Chemistry and Biochemistry

Bacterial expression and characterization of a cDNA for human liver estrogen sulfotransferase

Falany, Charles N., Krasnykh, Victor, Falany, Josie L.·1995·The Journal of Steroid Biochemistry and Molecular Biology

Abstract

A distinct human estrogen sulfotransferase (hEST-1) cDNA has been isolated from a human liver lambda Zap cDNA library using a PCR procedure. The enzymatically active protein has been expressed in two bacterial expression systems and the kinetic and immunologic properties of the enzyme have been characterized. The full-length cDNA for hEST-1 is 994 base pairs in length and encodes a 294 amino acid protein with a calculated molecular mass of 35,123 Da. Purified hEST-1 migrated with an apparent molecular mass of 35,000 Da during SDS-polyacrylamide gel electrophoresis. Immunoblot analysis of hEST-1 expressed in E. coli with a rabbit anti-hEST-1 antibody yields a band of approximately 35,000 Da. The anti-hEST-1 antibody also detects a single band in human liver and jejunum cytosol which migrates with the same molecular mass as expressed hEST-1. There was also no cross-reactivity of hEST-1 with rabbit anti-hP-PST or rabbit anti-hDHEA-ST antibodies upon immunoblot analysis. hEST-1 was expressed in bacteria and purified to homogeneity. Expressed hEST-1 activity has a significantly greater affinity for estrogen sulfation than that found for the other human STs which conjugate estrogens. hEST-1 maximally sulfates beta-estradiol and estrone at concentrations of 20 nM. hEST-1 also sulfates dehydroepiandrosterone, pregnenolone, ethinylestradiol, and 1-naphthol, at significantly higher concentrations; however, cortisol, testosterone and dopamine are not sulfated. The results presented in this paper describe the expression and characterization of a human EST distinct from other human STs which sulfate estrogens. The high affinity of hEST-1 for estrogens indicates that this ST may be important in both the metabolism of estrogens and in the regulation of their activities.

Integrity signals

Registry

Crossref · 10.1016/0960-0760(95)00015-r

Cites

27 of 27 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Cites

Flagged first, then by citations

1 of the 28 references couldn’t be matched to a known paper.

Cited by

Sorted by citations

Authors
Falany, C. N., Krasnykh, V., & Falany, J. L.
Affiliations
University of Alabama at Birmingham (US)
Corresponding author
Falany, Charles N.
Venue
The Journal of Steroid Biochemistry and Molecular Biology
Publisher
Elsevier BV
Published
1995-06
Volume
52
Issue
6
Pages
529-539
ISSN
0960-0760 (ISSN-L)
OpenAlex
W2130145312
Cited by
220
References
28
Citations by year
2025: 2 · 2024: 4 · 2023: 3 · 2022: 5 · 2021: 3 · 2020: 4 · 2019: 4 · 2018: 6 · 2017: 3 · 2016: 2 · 2015: 6 · 2014: 5 · 2013: 9 · 2012: 7
FWCI
8.05
Type
journal article
Language
en
Open access
closed
Locations
  • The Journal of Steroid Biochemistry and Molecular Biology (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute of General Medical Sciences (GM-38953)
Topics
  • Life Sciences › Pharmacology, Toxicology and Pharmaceutics › Pharmacology › Pharmacogenetics and Drug Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Estrogen and related hormone effects
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Steroid Chemistry and Biochemistry
Keywords
cDNA cloning, prokaryotic expression, enzyme kinetics, estrogen sulfation, beta-estradiol, estrone, dehydroepiandrosterone, pregnenolone, ethinyl estradiol, 1-naphthol, steroid metabolism, immunoblot detection
MeSH terms
Amino Acid Sequence, Animals, Base Sequence, Escherichia coli, Estrogens, Humans, Kinetics, Liver, Molecular Sequence Data, Molecular Weight, Rabbits, Species Specificity, Substrate Specificity, Sulfotransferases, Gene Expression, Polymerase Chain Reaction, Sequence Homology, Amino Acid, DNA, Complementary

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review