Glutathionyl Transferase Catalyzed Addition of Glutathione to COMC: A New Hypothesis for Antitumor Activity
作者:Diana S. Hamilton、Zhebo Ding、Bruce Ganem、Donald J. Creighton
DOI:10.1021/ol025650h
日期:2002.4.1
presented indicating that the potent antitumor activity of 2-crotonyloxymethyl-(4R,5R,6R)-4,5,6-trihydroxy-2-cyclohexenone (COTC) and 2-crotonyloxymethyl-2-cyclohexenone (COMC) is not likely the result of glyoxalase I inhibition, as has long been assumed. An alternative hypothesis is presented, based on the finding that COMC is a substrate for human glutathionyl transferase, which produces a transient
[反应:见正文]数据表明2-巴豆酰氧基甲基-(4R,5R,6R)-4,5,6-三羟基-2-环己烯酮(COTC)和2-巴豆酰氧基甲基-2-环己烯酮具有较强的抗肿瘤活性(COMC)不太可能是乙二醛酶I抑制的结果,长期以来一直认为。根据以下发现提出了另一种假设:COMC是人谷胱甘肽转移酶的底物,该酶产生一种瞬时的,高度亲电的谷胱甘肽化的2-exomethylcyclohexanone,可以共价修饰蛋白质和核酸。