Download MendeleyCrystal Structure of Fucose-Specific Lectin from Aleuria aurantia Binding Ligands at Three of Its Five Sugar Recognition Sites
Fujihashi, M., Peapus, D.H., Kamiya, N., Nagata, Y., Miki, K.(2003) Biochemistry 42: 11093-11099
- PubMed: 14503859
- DOI: https://doi.org/10.1021/bi034983z
- Primary Citation of Related Structures:
1IUB, 1IUC - PubMed Abstract:
Aleuria aurantia possesses a fucose-specific lectin (AAL) that is widely used as a specific probe for fucose. Fucosylated sugars often play pivotal roles in many cellular processes. We have determined the crystal structure of AAL at 2.24 A resolution in complex with only three fucose molecules in its five sugar binding sites of a six-fold beta-propeller structure. Very recently, the structure of AAL has been independently determined, showing that all the five binding sites were occupied by fucose molecules [Wimmerova, M., et al. (2003) J. Biol. Chem. 278, 27059-27067]. Stabilization of the arginine conformation bound to fucose molecules plays an essential role in generating the difference in the affinity in the five binding sites. Binding models with a couple of saccharides based on biochemical assays suggest that hydrophobic contacts also play important roles in AAL recognizing its ligand.
Organizational Affiliation:
Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan.
