Mass spectrometric analysis of the immunodominant glycan epitope of Echinococcus granulosus antigen Ag5.
Mass spectrometric analysis of the immunodominant glycan epitope of Echinococcus granulosus antigen Ag5.
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DOI:
10.1016/j.ijpara.2012.01.002
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发表时间:
2012
影响因子:
4
通讯作者:
Wilson IB
中科院分区:
文献类型:
--
作者:
Paschinger K;Gonzalez-Sapienza GG;Wilson IB
► Echinococcus granulosus antigen, Ag5, possesses an immunodominant glycan epitope. ► The N-glycans and glycopeptides of the E. granulosus Ag5 38 kDa subunit were analysed by mass spectrometry. ► Analyses verified the presence of phosphorylcholine on a cestode protein. In previous work we showed that Ag5, a major diagnostic antigen from the metacestode of Echinococcus granulosus, possesses a dominant sugar epitope that upon removal results in abolition of most of the antigen immunoreactivity with patient sera. Analysis of this glycan modification has now been performed by western blotting and mass spectrometry. Reactivity to both a specific monoclonal antibody (TEPC15) and human C-reactive protein as well as the presence of a modification of 165 mass units, as detected by mass spectrometry of both glycopeptides and released N-glycans, indicated that the immunodominant sugar epitope of the Ag5 38 kDa subunit is a biantennary structure modified by phosphorylcholine. We believe this is the first time that such a modification has been proven in cestodes and provides the structural basis for understanding the antigenicity of this major E. granulosus component.
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影响因子:
1.5
作者:
Haslam, SM;Khoo, KH;Dell, A
通讯作者:
Dell, A
影响因子:
2.9
作者:
LEON, MA;YOUNG, NM
通讯作者:
YOUNG, NM
DOI:
10.1074/jbc.m602878200
发表时间:
2006-09-22
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Paschinger K;Hackl M;Gutternigg M;Kretschmer-Lubich D;Stemmer U;Jantsch V;Lochnit G;Wilson IB
通讯作者:
Wilson IB
DOI:
10.1111/j.1742-4658.2006.05615.x
发表时间:
2007-02
期刊:
The FEBS journal
影响因子:
--
作者:
Pöltl G;Kerner D;Paschinger K;Wilson IB
通讯作者:
Wilson IB
影响因子:
2.9
作者:
Diaz, Alvaro;Carolina Fontana, E.;Ferreira, Fernando
通讯作者:
Ferreira, Fernando