2eig

Lotus tetragonolobus seed lectin (Isoform)

spinqualitylabelsall models 2eig, resolution 2.00Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2eig is a 4 chain structure with sequence from Lotus tetragonolobus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: CA, MN, NAG Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed Lotus tetragonolobus lectin (LTA) is a fucose-specific legume lectin. Although several studies report a diverse combination of biological activities for LTA, little is known about the mechanisms involved in l-fucosyl oligosaccharide recognition. The crystal structure of LTA at 2.0A resolution reveals a different legume lectin tetramer. Its structure consists of a homotetramer composed of two back-to-back GS4-like dimers arranged in a new mode, resulting in a novel tetramer. The LTA N-linked carbohydrate at Asn4 and the unusual LTA dimer-dimer interaction are related to its particular mode of tetramerization. In addition, we used small angle X-ray scattering to investigate the quaternary structure of LTA in solution and to compare it to the crystalline structure. Although the crystal structure of LTA has revealed a conserved metal-binding site, its l-fucose-binding site presents some punctual differences. Our investigation of the new tetramer of LTA and its fucose-binding site is essential for further studies related to cross-linking between LTA and complex divalent l-fucosyl carbohydrates. Identification of a new quaternary association for legume lectins.,Moreno FB, de Oliveira TM, Martil DE, Vicoti MM, Bezerra GA, Abrego JR, Cavada BS, Filgueira de Azevedo W Jr J Struct Biol. 2008 Feb;161(2):133-43. Epub 2007 Oct 15. PMID:18068379 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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