The AlkB Domain of Mammalian ABH8 Catalyzes Hydroxylation of 5-Methoxycarbonylmethyluridine at the Wobble Position of tRNA
作者:Ye Fu、Qing Dai、Wen Zhang、Jin Ren、Tao Pan、Chuan He
DOI:10.1002/anie.201001242
日期:2010.11.15
Family ties: The AlkB family of nonheme iron, α‐ketoglutarate (αKG)‐dependent dioxygenases is involved in biological processes such as DNA/RNA repair and obesity. The AlkB domain of ABH8 is shown to catalyze the hydroxylation of a modified uridine (mcm5U) into (S)‐mchm5U at the wobble position of the anticodon stem–loop in tRNA (see scheme), thereby suggesting that this protein is a tRNA hypermodification
家族关系:非血红素铁、α-酮戊二酸 (αKG) 依赖性双加氧酶的 AlkB 家族参与 DNA/RNA 修复和肥胖等生物过程。显示 ABH8 的 AlkB 结构域在 tRNA 中反密码子茎环的摆动位置催化修饰的尿苷 (mcm 5 U)羟基化为 ( S )-mchm 5 U(参见方案),从而表明该蛋白质是一种 tRNA 超修饰酶。