3USN

STRUCTURE OF THE CATALYTIC DOMAIN OF HUMAN FIBROBLAST STROMELYSIN-1 INHIBITED WITH THE THIADIAZOLE INHIBITOR IPNU-107859, NMR, 1 STRUCTURE

3USN の概要

• エントリーDOI: 10.2210/pdb3usn/pdb
• 分子名称: STROMELYSIN-1, ZINC ION, CALCIUM ION, ... (5 entities in total)
• 機能のキーワード: hydrolase, metalloprotease
• 由来する生物種: Homo sapiens (human)
• 細胞内の位置: Secreted, extracellular space, extracellular matrix (Probable): P08254
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 19475.50

構造登録者

Stockman, B.J. (登録日: 1998-06-18, 公開日: 1999-01-20, 最終更新日: 2024-05-22)

主引用文献

Stockman, B.J.,Waldon, D.J.,Gates, J.A.,Scahill, T.A.,Kloosterman, D.A.,Mizsak, S.A.,Jacobsen, E.J.,Belonga, K.L.,Mitchell, M.A.,Mao, B.,Petke, J.D.,Goodman, L.,Powers, E.A.,Ledbetter, S.R.,Kaytes, P.S.,Vogeli, G.,Marshall, V.P.,Petzold, G.L.,Poorman, R.A.
Solution structures of stromelysin complexed to thiadiazole inhibitors.
Protein Sci., 7:2281-2286, 1998

PubMed Abstract: Unregulated or overexpressed matrix metalloproteinases (MMPs), including stromelysin, collagenase, and gelatinase. have been implicated in several pathological conditions including arthritis and cancer. Small-molecule MMP inhibitors may have therapeutic value in the treatment of these diseases. In this regard, the solution structures of two stromelysin/ inhibitor complexes have been investigated using 1H, 13C, and 15N NMR spectroscopy. Both-inhibitors are members of a novel class of matrix metalloproteinase inhibitor that contain a thiadiazole group and that interact with stromelysin in a manner distinct from other classes of inhibitors. The inhibitors coordinate the catalytic zinc atom through their exocyclic sulfur atom, with the remainder of the ligand extending into the S1-S3 side of the active site. The binding of inhibitor containing a protonated or fluorinated aromatic ring was investigated using 1H and 19F NMR spectroscopy. The fluorinated ring was found to have a reduced ring-flip rate compared to the protonated version. A strong, coplanar interaction between the fluorinated ring of the inhibitor and the aromatic ring of Tyr155 is proposed to account for the reduced ring-flip rate and for the increase in binding affinity observed for the fluorinated inhibitor compared to the protonated inhibitor. Binding interactions observed for the thiadiazole class of ligands have implications for the design of matrix metalloproteinase inhibitors.

PubMed: 9827994

実験手法

SOLUTION NMR