4LOV

Crystal structure of FimH in complex with Heptylmannoside

4LOV の概要

• エントリーDOI: 10.2210/pdb4lov/pdb
• 関連するPDBエントリー: 3ZPD
• 分子名称: Protein FimH, heptyl alpha-D-mannopyranoside, GLYCEROL, ... (5 entities in total)
• 機能のキーワード: pilus subunit, ig fold, carbohydrate binding protein
• 由来する生物種: Escherichia coli
• 細胞内の位置: Fimbrium: P08191
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 17356.23

構造登録者

Garcia-Pino, A.,Vanwetswinkel, S.,van Nuland, N. (登録日: 2013-07-13, 公開日: 2014-02-12, 最終更新日: 2024-10-16)

主引用文献

Vanwetswinkel, S.,Volkov, A.N.,Sterckx, Y.G.,Garcia-Pino, A.,Buts, L.,Vranken, W.F.,Bouckaert, J.,Roy, R.,Wyns, L.,van Nuland, N.A.
Study of the Structural and Dynamic Effects in the FimH Adhesin upon alpha-d-Heptyl Mannose Binding.
J.Med.Chem., 57:1416-1427, 2014

PubMed Abstract: Uropathogenic Escherichia coli cause urinary tract infections by adhering to mannosylated receptors on the human urothelium via the carbohydrate-binding domain of the FimH adhesin (FimHL). Numerous α-d-mannopyranosides, including α-d-heptyl mannose (HM), inhibit this process by interacting with FimHL. To establish the molecular basis of the high-affinity HM binding, we solved the solution structure of the apo form and the crystal structure of the FimHL-HM complex. NMR relaxation analysis revealed that protein dynamics were not affected by the sugar binding, yet HM addition promoted protein dimerization, which was further confirmed by small-angle X-ray scattering. Finally, to address the role of Y48, part of the "tyrosine gate" believed to govern the affinity and specificity of mannoside binding, we characterized the FimHL Y48A mutant, whose conformational, dynamical, and HM binding properties were found to be very similar to those of the wild-type protein.

PubMed: 24476493
DOI: 10.1021/jm401666c

実験手法

X-RAY DIFFRACTION (1.5 Å)