To search for the endogenous glyco-epitope in Caenorhabditis elegans, we synthesized labeled Galβ1-3Fuc and Galβ1-4Fuc and examined their binding affinity for C. elegans galectin LEC-6 using frontal affinity chromatography analysis. We developed a new strategy for synthesizing the labeled saccharides, in which the labeling unit, the 2-aminopyridine moiety, is coupled with a spacer unit derived from D-mannitol. Our results indicate that Galβ1-4Fuc is the endogenous glyco-epitope present in C. elegans N-glycans.
为了寻找内源性糖基表位在秀丽隐杆线虫(Caenorhabditis elegans)中的存在,我们合成了带有标记的Galβ1-3Fuc和Galβ1-4Fuc,并通过前体亲和层析分析检测它们与C. elegans半
乳糖凝集素L
EC-6的结合亲和性。我们开发了一种新的合成标记
糖类策略,其中标记单元——2-
氨基吡啶部分与一个源自D-
甘露醇的间隔单元相连接。我们的结果表明,Galβ1-4Fuc是存在于C. elegans N-糖链中的内源性糖基表位。