6KIK

Crystal structure of a thermostable aldo-keto reductase Tm1743 in complex with inhibitor tolrestat

6KIK の概要

• エントリーDOI: 10.2210/pdb6kik/pdb
• 分子名称: Oxidoreductase, aldo/keto reductase family, TOLRESTAT (3 entities in total)
• 機能のキーワード: aldo-ketone reductase, tolrestat, competitive inhibitor, oxidoreductase
• 由来する生物種: Thermotoga maritima (strain ATCC 43589 / MSB8 / DSM 3109 / JCM 10099)
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 31847.37

構造登録者

Zhang, C.Y.,Liu, X.M.,Wang, C.,Tang, W.R. (登録日: 2019-07-18, 公開日: 2019-09-25, 最終更新日: 2023-11-22)

主引用文献

Zhang, C.,Min, Z.,Liu, X.,Wang, C.,Wang, Z.,Shen, J.,Tang, W.,Zhang, X.,Liu, D.,Xu, X.
Tolrestat acts atypically as a competitive inhibitor of the thermostable aldo-keto reductase Tm1743 from Thermotoga maritima.
Febs Lett., 594:564-580, 2020

PubMed Abstract: Tolrestat and epalrestat have been characterized as noncompetitive inhibitors of aldo-ketone reductase 1B1 (AKR1B1), a leading drug target for the treatment of type 2 diabetes complications. However, clinical applications are limited for most AKR1B1 inhibitors due to adverse effects of cross-inhibition with other AKRs. Here, we report an atypical competitive binding and inhibitory effect of tolrestat on the thermostable AKR Tm1743 from Thermotoga maritima. Analysis of the Tm1743 crystal structure in complex with tolrestat alone and epalrestat-NADP shows that tolrestat, but not epalrestat, binding triggers dramatic conformational changes in the anionic site and cofactor binding pocket that prevents accommodation of NADP . Enzymatic and molecular dynamics simulation analyses further confirm tolrestat as a competitive inhibitor of Tm1743.

PubMed: 31573681
DOI: 10.1002/1873-3468.13630

実験手法

X-RAY DIFFRACTION (1.601 Å)