1OXC

LecB (PA-LII) in complex with FUCOSE

1OXC の概要

• エントリーDOI: 10.2210/pdb1oxc/pdb
• 関連するPDBエントリー: 1GZT 1OUR 1OUS 1OUX 1OVP 1OVS
• 分子名称: hypothetical protein LecB, beta-L-fucopyranose, alpha-L-fucopyranose, ... (6 entities in total)
• 機能のキーワード: lectin, carbohydrate, sugar binding protein
• 由来する生物種: Pseudomonas aeruginosa
• タンパク質・核酸の鎖数: 4
• 化学式量合計: 48340.45

構造登録者

Loris, R.,Tielker, D.,Jaeger, K.-E.,Wyns, L. (登録日: 2003-04-02, 公開日: 2003-09-09, 最終更新日: 2024-03-13)

主引用文献

Loris, R.,Tielker, D.,Jaeger, K.-E.,Wyns, L.
Structural Basis of Carbohydrate Recognition by the Lectin LecB from Pseudomonas aeruginosa
J.MOL.BIOL., 331:861-870, 2003

PubMed Abstract: The crystal structure of Pseudomonas aeruginosa fucose-specific lectin LecB was determined in its metal-bound and metal-free state as well as in complex with fucose, mannose and fructopyranose. All three monosaccharides bind isosterically via direct interactions with two calcium ions as well as direct hydrogen bonds with several side-chains. The higher affinity for fucose is explained by the details of the binding site around C6 and O1 of fucose. In the mannose and fructose complexes, a carboxylate oxygen atom and one or two hydroxyl groups are partly shielded from solvent upon sugar binding, preventing them from completely fulfilling their hydrogen bonding potential. In the fucose complex, no such defects are observed. Instead, C6 makes favourable interactions with a small hydrophobic patch. Upon demetallization, the C terminus as well as the otherwise rigid metal-binding loop become more mobile and adopt multiple conformations.

PubMed: 12909014
DOI: 10.1016/S0022-2836(03)00754-X

実験手法

X-RAY DIFFRACTION (1.2 Å)