4TQI

Human transthyretin (TTR) complexed with 3-(9H-fluoren-9-ylideneaminooxy)propanoic acid in a dual binding mode

4TQI の概要

• エントリーDOI: 10.2210/pdb4tqi/pdb
• 関連するPDBエントリー: 3GS0 4TQ8 4TQH 4TQP
• 分子名称: Transthyretin, (2S)-3-[(9H-fluoren-9-ylideneamino)oxy]-2-methylpropanoic acid, GLYCEROL, ... (4 entities in total)
• 機能のキーワード: peg ttr crystallization, flourenone based amyloid antagonist and inhibitor, prealbumin, dual binding mode, hormone transporter, transport protein
• 由来する生物種: Homo sapiens (Human)
• 細胞内の位置: Secreted: P02766
• タンパク質・核酸の鎖数: 2
• 化学式量合計: 28301.52

構造登録者

Stura, E.A.,Ciccone, L.,Nencetti, S.,Rossello, A.,Orlandini, E. (登録日: 2014-06-11, 公開日: 2015-06-24, 最終更新日: 2023-09-27)

主引用文献

Ciccone, L.,Nencetti, S.,Rossello, A.,Tepshi, L.,Stura, E.A.,Orlandini, E.
X-ray crystal structure and activity of fluorenyl-based compounds as transthyretin fibrillogenesis inhibitors.
J Enzyme Inhib Med Chem, :1-10, 2015

PubMed Abstract: Transthyretin (TTR) is a 54 kDa homotetrameric protein that transports thyroxine (T4) and retinol (vitamin A), through its association with retinol binding protein (RBP). Under unknown conditions, it aggregates to form fibrils associated with TTR amyloidosis. Ligands able to inhibit fibril formation have been studied by X-ray crystallography. The use of polyethylene glycol (PEG) instead of ammonium sulphate or citrate has been evaluated as an alternative to obtain new TTR complexes with (R)-3-(9-fluoren-9-ylideneaminooxy)-2-methyl-N-(methylsulfonyl) propionamide (48R(1)) and 2-(9H-fluoren-9-ylideneaminooxy) acetic acid (ES8(2)). The previously described fluorenyl based inhibitors (S)-3-((9H-fluoren-9-ylideneamino)oxy)-2-methylpropanoic acid (6BD) and 3-((9H-fluoren-9-ylideneamino)oxy)propanoic acid (7BD) have been re-evaluated with the changed crystallization method. The new TTR complexes with compounds of the same family show that the 9-fluorenyl motif can occupy alternative hydrophobic binding sites. This augments the potential use of this scaffold to yield a large variety of differently substituted mono-aryl compounds able to inhibit TTR fibril formation.

PubMed: 26235916

実験手法

X-RAY DIFFRACTION (1.25 Å)