Structure of mannose-specific snowdrop (Galanthus nivalis) lectin is representative of a new plant lectin family.Hester, G., Kaku, H., Goldstein, I.J., Wright, C.S.
(1995) Nat.Struct.Mol.Biol. 2: 472-479
- PubMed: 7664110
- PubMed Abstract:
- Crystallization and Preliminary X-Ray Diffraction Results of Snowdrop (Galanthus Nivalis) Lectin
Wright, C.S.,Kaku, H.,Goldstein, I.J.
(1990) J.Biol.Chem. 265: 1676
- Biosynthesis, Primary Structure and Molecular Cloning of Snowdrop (Galanthus Nivalis) Lectin
Van Damme, E.J.M.,Kaku, H.,Perini, F.,Goldstein, I.J.,Peeters, B.,Yagi, F.,Decock, B.,Peumans, W.J.
(1991) Eur.J.Biochem. 202: 23
Tetrameric Galanthus nivalis agglutinin (50,000 M(r)) belongs to a super-family of alpha-D-mannose-specific plant bulb lectins known to be potent inhibitors of retroviruses. The 2.3 A crystal structure of this lectin complexed with methyl alpha-D-man ...
Tetrameric Galanthus nivalis agglutinin (50,000 M(r)) belongs to a super-family of alpha-D-mannose-specific plant bulb lectins known to be potent inhibitors of retroviruses. The 2.3 A crystal structure of this lectin complexed with methyl alpha-D-mannose reveals a novel three-fold symmetric beta-sheet polypeptide fold. Three antiparallel four-stranded beta-sheets, each with a conserved mannose-binding site, are arranged as a 12-stranded beta-barrel. The tetramer displays 222 symmetry. Pairs of monomers form stable dimers through C-terminal strand exchange. The so formed hybrid beta-sheets are the sites for high affinity mannose binding in the dimer interface. Occupancy observed at corresponding sites in other beta-sheets suggests a potential for twelve sites per tetramer.
Department of Biochemistry, Virginia Commonwealth University, Richmond 23298, USA.