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(Received for publication, May 5, 1997)
From the The possible interaction of the
neutrophil-activating protein of Helicobacter pylori with
target cell glycoconjugates was investigated by the binding of
125I-labeled recombinant protein to glycosphingolipids from
human neutrophils in solid phase assays. Thereby, a distinct binding of
the neutrophil-activating protein to four bands in the acid glycosphingolipid fraction from human neutrophils was detected, whereas
no binding to the non-acid glycosphingolipids or polyglycosyl ceramides
from these cells was obtained. When using glycosphingolipids not
present in the cell membrane of human neutrophils, it was found that
the neutrophil-activating protein also bound to sulfated glycosphingolipids as sulfatide and sulfated gangliotetraosyl ceramide. Comparison of the binding preferences of the protein to
reference glycosphingolipids from other sources suggested that in human
granulocytes, the neutrophil-activating protein of H. pylori preferentially recognizes glycoconjugates with a
terminally unsubstituted NeuAc
Volume 272, Number 30,
Issue of July 25, 1997
pp. 19067-19071
©1997 by The American Society for Biochemistry and Molecular Biology, Inc.
,
,
and
Department of Medical Biochemistry,
Göteborg University, Medicinaregatan 9A, S-413 90 Göteborg,
Sweden, the ¶ Bacterial Enteropathogens Laboratory, Veterans
Affairs Medical Center and Baylor College of Medicine, Houston, Texas
77030, and the
Department of Clinical Microbiology and
Immunology, Örebro Medical Center,
S-701 85 Örebro, Sweden
3Gal
4GlcNAc
3Gal
4GlcNAc
sequence.
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