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The glycosylation of myeloperoxidase

Reputable Mentor II
Reputable Mentor II
Ravnsborg T, Houen G, Højrup P.
Biochim Biophys Acta. 2010 Oct;1804(10):2046-53.
The enzyme myeloperoxidase (MPO) is an important part of the neutrophil immune reaction and can be found in alfa granula. The presence of MPO can be used to distinguish acute myelogenous leukemia from acute lymphocytic leukemia. However, the methods employed to do so, such as flow cytometry and immunohistochemistry rely on antibody recognition, and therefore the characterization of the mature MPO, including post-translational modifications, must be considered as important as epitope mapping. MPO has 5 N-linked glycosylation sites, occupied by both high mannose and complex glycan structures. In this study we utilize intact glycopeptide MSMS analysis for site specific characterization of the glycan structures of MPO from a cancer patient. The identified glycan structures are compared to those of MPO from healthy donors, in order to probe for any potential differences that may have diagnostic use.
Institute of Biochemistry and Molecular Biology, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark.
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