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Originally published In Press as doi:10.1074/jbc.C200580200 on November 22, 2002
J. Biol. Chem., Vol. 278, Issue 3, 1407-1410, January 17, 2003
ACCELERATED PUBLICATION
The Escherichia coli Copper-responsive
copA Promoter Is Activated by Gold*
Jivko V.
Stoyanov and
Nigel L.
Brown§
From the School of Biosciences, The University of Birmingham,
Edgbaston, Birmingham B15 2TT, United Kingdom
The copA gene of Escherichia
coli encodes a copper transporter and its promoter is normally
regulated by Cu(I) ions and CueR, a MerR-like transcriptional
activator. We show that CueR can also be activated by gold salts and
that Cys112 and Cys120 are involved in
recognition of gold, silver, and copper salts. Gold activation is
unaffected by copper chelating agents but is affected by general metal
chelators. This is the first example of specific regulation of
transcription by gold, and we briefly speculate that the biological
effects of gold antiarthritic drugs may be through their effects on
copper management in eukaryotic systems.
*
This work was supported by Biotechnology and Biological
Sciences Research Council Grants G14071 and JIF13209 (to N. L. B.) and by the Darwin Trust of Edinburgh Studentship (to
J. V. S.).The costs of publication of this
article were defrayed in part by the
payment of page charges. The article
must therefore be hereby marked
"advertisement" in
accordance with 18 U.S.C. Section
1734 solely to indicate this fact.
Present address: Dept. of Clinical Pharmacology, University of
Berne, Murtenstrasse 35, CH-3010 Bern, Switzerland.
§
To whom correspondence should be addressed. Tel.: 44-121-414-4567;
Fax: 44-121-414-5907; E-mail: n.l.brown@bham.ac.uk.
Copyright © 2003 by The American Society for Biochemistry and Molecular Biology, Inc.

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Copyright © 2003 by the American Society for Biochemistry and Molecular Biology.
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