Leaves of the Lamiaceae species Glechoma hederacea (ground ivy) contain a lectin that is structurally and evolutionary related to the legume lectins
文献类型： 外文期刊
作者： Wang, WF 1 ; Peumans, WJ 2 ; Rouge, P 2 ; Rossi, C 2 ; Proost, P 2 ; Chen, JP 2 ; Van Damme, EJM 2 ;
作者机构： 1.Katholieke Univ Leuven, Lab Phytopathol & Plant Protect, B-3001 Louvain, Belgium
2.Katholieke Univ Leuven, Lab Phytopathol & Plant Protect, B-3001 Louvain, Belgium; CNRS, UMR 5089, Inst Pharmacol & Biol Struct, F-31077 Toulouse 4, France; Katholieke Univ Leuven, Rega Inst, Lab Mol Immunol, B-3000 Louvain, Belgium; Zhejiang Acad Agr Sci, Dept Virol, Hangzhou 310021, Peoples R China
关键词： cDNA cloning;Glechoma hederacea;Lamiaceae;legume lectin;N-acetylgalactosamine binding;molecular evolution
期刊名称：PLANT JOURNAL （ 影响因子：6.417； 五年影响因子：7.627 ）
ISSN： 0960-7412
年卷期： 2003 年 33 卷 2 期
页码：
收录情况： SCI
摘要： A novel lectin has been isolated and cloned from leaves of Glechoma hederacea (ground ivy), a typical representative of the plant family Lamiaceae. Biochemical analyses indicated that the G. hederacea agglutinin (Gleheda) is a tetrameric protein consisting of four subunits pairwise linked through an interchain disulphide bridge and exhibits a preferential specificity towards N -acetylgalactosamine. Cloning of the corresponding gene and molecular modeling of the deduced sequence demonstrated that Gleheda shares high sequence similarity with the legume lectins and exhibits the same overall fold and three-dimensional structure as the classical legume lectins. The identification of a soluble and active legume lectin ortholog in G. hederacea not only indicates that the yet unclassified Lamiaceae lectins belong to the same lectin family as the legume lectins, but also sheds a new light on the specificity, physiological role and evolution of the classical legume lectins.
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