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Journal Articles International Journal of Molecular Sciences Year : 2019

Overview of the Structure–Function Relationships of Mannose-Specific Lectins from Plants, Algae and Fungi

Abstract

To date, a number of mannose-binding lectins have been isolated and characterized from plants and fungi. These proteins are composed of different structural scaffold structures which harbor a single or multiple carbohydrate-binding sites involved in the specific recognition of mannose-containing glycans. Generally, the mannose-binding site consists of a small, central, carbohydrate-binding pocket responsible for the "broad sugar-binding specificity" toward a single mannose molecule, surrounded by a more extended binding area responsible for the specific recognition of larger mannose-containing N-glycan chains. Accordingly, the mannose-binding specificity of the so-called mannose-binding lectins towards complex mannose-containing N-glycans depends largely on the topography of their mannose-binding site(s). This structure⁻function relationship introduces a high degree of specificity in the apparently homogeneous group of mannose-binding lectins, with respect to the specific recognition of high-mannose and complex N-glycans. Because of the high specificity towards mannose these lectins are valuable tools for deciphering and characterizing the complex mannose-containing glycans that decorate both normal and transformed cells, e.g., the altered high-mannose N-glycans that often occur at the surface of various cancer cells.
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hal-02388775 , version 1 (21-01-2020)

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Annick Barre, Yves Bourne, Els J. M. van Damme, Pierre Rougé. Overview of the Structure–Function Relationships of Mannose-Specific Lectins from Plants, Algae and Fungi. International Journal of Molecular Sciences, 2019, Protein–Carbohydrate Interactions: Structure–Function Relationships, 20 (2), pp.254. ⟨10.3390/ijms20020254⟩. ⟨hal-02388775⟩
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