The Tetrameric Plant Lectin BanLec Neutralizes HIV through Bidentate Binding to Specific Viral Glycans.
The Tetrameric Plant Lectin BanLec Neutralizes HIV through Bidentate Binding to Specific Viral Glycans.
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DOI:
10.1016/j.str.2017.03.015
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发表时间:
2017-05-02
期刊:
影响因子:
--
通讯作者:
Struwe WB
中科院分区:
文献类型:
--
作者:
Hopper JTS;Ambrose S;Grant OC;Krumm SA;Allison TM;Degiacomi MT;Tully MD;Pritchard LK;Ozorowski G;Ward AB;Crispin M;Doores KJ;Woods RJ;Benesch JLP;Robinson CV;Struwe WB
Select lectins have powerful anti-viral properties that effectively neutralize HIV-1 by targeting the dense glycan shield on the virus. Here, we reveal the mechanism by which one of the most potent lectins, BanLec, achieves its inhibition. We identify that BanLec recognizes a subset of high-mannose glycans via bidentate interactions spanning the two binding sites present on each BanLec monomer that were previously considered separate carbohydrate recognition domains. We show that both sites are required for high-affinity glycan binding and virus neutralization. Unexpectedly we find that BanLec adopts a tetrameric stoichiometry in solution whereby the glycan-binding sites are positioned to optimally target glycosylated viral spikes. The tetrameric architecture, together with bidentate binding to individual glycans, leads to layers of multivalency that drive viral neutralization through enhanced avidity effects. These structural insights will prove useful in engineering successful lectin therapeutics targeting the dense glycan shield of HIV.
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影响因子:
5.5
作者:
Goetz, Andreas W.;Williamson, Mark J.;Xu, Dong;Poole, Duncan;Le Grand, Scott;Walker, Ross C.
通讯作者:
Walker, Ross C.
DOI:
10.1074/jbc.m113.539114
发表时间:
2014-06-13
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Kanagawa M;Liu Y;Hanashima S;Ikeda A;Chai W;Nakano Y;Kojima-Aikawa K;Feizi T;Yamaguchi Y
通讯作者:
Yamaguchi Y
影响因子:
3
作者:
Birmanns, Stefan;Rusu, Mirabela;Wriggers, Willy
通讯作者:
Wriggers, Willy
DOI:
10.1098/rstb.2011.0405
发表时间:
2013-05-05
期刊:
Philosophical transactions of the Royal Society of London. Series B, Biological sciences
影响因子:
--
作者:
Hilton GR;Hochberg GK;Laganowsky A;McGinnigle SI;Baldwin AJ;Benesch JL
通讯作者:
Benesch JL
影响因子:
3.7
作者:
Brichacek, Beda;Lagenaur, Laurel A.;Hamer, Dean H.
通讯作者:
Hamer, Dean H.