Membrane Deformation by Neolectins with Engineered Glycolipid Binding Sites

被引:48
作者
Arnaud, Julie [1 ,2 ]
Troendle, Kevin [3 ,4 ]
Claudinon, Julie [3 ,4 ]
Audfray, Aymeric [1 ,2 ]
Varrot, Annabelle [1 ,2 ]
Roemer, Winfried [3 ,4 ]
Imberty, Anne [1 ,2 ]
机构
[1] CNRS, CERMAV, F-38000 Grenoble, France
[2] Grenoble Alpes Univ, F-38000 Grenoble, France
[3] Univ Freiburg, Inst Biol 2, D-79104 Freiburg, Germany
[4] Univ Freiburg, BIOSS Ctr Biol Signalling Studies, D-79104 Freiburg, Germany
基金
欧洲研究理事会;
关键词
lectms; hposomes; membranes; multivalency; oligosaccharides; LECTIN; TOXINS; CELLS; INVAGINATIONS; DYNAMICS; BIOLOGY;
D O I
10.1002/anie.201404568
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Lectins are glycan-binding proteins that are involved in the recognition of glycoconju gates at the cell surface. When binding to glycolipids, multivalent lectins can affect their distribution and alter membrane shapes. Neolectins have now been designed with controlled number and position of binding sites to decipher the role of multivalency on avidity to a glycosylated surface and on membrane dynamics of glycolipids. A monomeric hexavalent neolectin has been first engineered from a trimeric hexavalent bacterial lectin, From this neolectin template, 13 different neolectins with a valency ranging from 0 to 6 were designed, produced, and analyzed for their ability to bind fucose in solution, to attach to a glycosylated surface and to invaginate glycolipid-containing giant liposomes. Whereas the avidity only depends on the presence of at least two binding sites, the ability to bend and invaginate membranes critically depends on the distance between two adjacent binding sites.
引用
收藏
页码:9267 / 9270
页数:4
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