Synthesis of selenocysteine-containing dipeptides modeling the active site of thioredoxin reductase
作者:Shingo Shimodaira、Michio Iwaoka
DOI:10.1080/10426507.2019.1603721
日期:2019.7.3
Abstract Four cyclic dipeptides modeling the active site of thioredoxin reductase (TrxR), UU, CU, UC, and CC, where U and C represent selenocystine and cystine, respectively, were synthesized and their glutathione peroxidase (GPx)-like catalytic activity was evaluated by the reaction of hydrogen peroxide (H2O2) with glutathione (GSH) in the presence of glutathione reductase (GR). Among these, only
摘要 合成了四种模拟硫氧还蛋白还原酶 (TrxR)、UU、CU、UC 和 CC 活性位点的环状二肽,其中 U 和 C 分别代表硒代胱氨酸和胱氨酸,并评估了它们的谷胱甘肽过氧化物酶 (GPx) 样催化活性通过在谷胱甘肽还原酶 (GR) 存在下过氧化氢 (H2O2) 与谷胱甘肽 (GSH) 的反应。其中,只有 UC 表现出显着的抗氧化能力,表明 Se-S 键周围的原子环境与对硫醇底物的反应性有关。图形概要