The N-glycans of Trichomonas vaginalis contain variable core and antennal modifications

Paschinger, Katharina and Hykollari, Alba and Razzazi-Fazeli, Ebrahim and Greenwell, Pamela and Leitsch, David and Walochnik, Julia and Wilson, Iain B.H. (2012) The N-glycans of Trichomonas vaginalis contain variable core and antennal modifications. Glycobiology, 22 (2). pp. 300-313. ISSN 0959-6658

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Official URL: http://dx.doi.org/10.1093/glycob/cwr149

Abstract

Trichomonad species are widespread unicellular flagellated parasites of vertebrates which interact with their hosts through carbohydrate–lectin interactions. In the past, some data have been accumulated regarding their lipo(phospho)glycans, a major glycoconjugate on their cell surfaces; on the other hand, other than biosynthetic aspects, few details about their N-linked oligosaccharides are known. In this study, we present both mass spectrometric and high-performance liquid chromatography data about the N-glycans of different strains of Trichomonas vaginalis, a parasite of the human reproductive tract. The major structure in all strains examined is a truncated oligomannose form (Man5GlcNAc2) with ?1,2-mannose residues, compatible with a previous bioinformatic examination of the glycogenomic potential of T. vaginalis. In addition, dependent on the strain, N-glycans modified by pentose residues, phosphate or phosphoethanolamine and terminal N-acetyllactosamine (Gal?1,4GlcNAc) units were found. The modification of N-glycans by N-acetyllactosamine in at least some strains is shared with the lipo(phospho)glycan and may represent a further interaction partner for host galectins, thereby playing a role in binding of the parasite to host epithelia. On the other hand, the variation in glycosylation between strains may be the result of genetic diversity within this species.

Item Type: Article
Subjects: University of Westminster > Science and Technology > Life Sciences, School of (No longer in use)
Depositing User: Rachel Wheelhouse
Date Deposited: 23 Oct 2012 08:42
Last Modified: 23 Oct 2012 08:43
URI: http://westminsterresearch.wmin.ac.uk/id/eprint/11259

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