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J. Biol. Chem., Vol. 277, Issue 31, 27896-27902, August 2, 2002
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From the Max-Planck-Institut für Infektionsbiologie,
Abteilung Molekulare Biologie, Schumannstra Helicobacter pylori is a widespread
human pathogen that can cause gastric ulcers and cancer. To identify
surface proteins that may play a role in pathogen-host interactions and
represent potential targets for the control of this infection, we
selectively biotinylated intact H. pylori with the
hydrophilic reagent sulfosuccinimidyl-6-(biotinamido)-hexanoate and
purified the labeled proteins by membrane isolation, solubilization, and affinity chromatography. After separation of 82 biotinylated proteins on two-dimensional gels, 18 were identified with comparison to
proteome data and peptide mass fingerprinting. Among the identified proteins, 9 have previously been shown to be surface-exposed, 7 are
associated with virulence, and 11 are highly immunogenic in infected
patients. In conclusion, this generally applicable combined proteome
approach facilitates the rapid identification of promising targets for
the control of H. pylori and might be applicable to
numerous other human pathogens although larger biotinylation reagents might be required in some cases to prevent permeation of porin
channels in the outer membrane.
Identification of Surface Proteins of Helicobacter
pylori by Selective Biotinylation, Affinity Purification, and
Two-dimensional Gel Electrophoresis*
, and
e 21/22, D-10117
Berlin, Germany
*
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.
To whom correspondence should be addressed. Tel.: 49-30-28460402;
Fax: 49-03-28460401; E-mail: meyer@mpiib-berlin-mpg.de.
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