Rinaldi A C, Ponticelli G, Oliva S, Di Giulio A, Sanjust E
Cattedra di Chimica Biologica, Dipartimento di Scienze Mediche Internistiche, Università di Cagliari, Monserrato, Italy.
Bioorg Med Chem Lett. 2000 May 1;10(9):989-92. doi: 10.1016/s0960-894x(00)00145-1.
Topaquinone (TPQ) is a cofactor present at the active site of copper amine oxidases, derived from a Tyr residue inserted in the polypeptide chain through a copper-dependent but otherwise largely unknown mechanism. A simple model system was developed that permits to obtain the overall transformation of 4-tert-butylphenol, chosen as a model for Tyr, into a TPQ-like, para-hydroxyquinonic structure in the presence of Cu(II)-imidazole mononuclear complexes.
对苯醌(TPQ)是铜胺氧化酶活性位点上存在的一种辅因子,它由通过一种依赖铜但在很大程度上未知的机制插入多肽链中的酪氨酸(Tyr)残基衍生而来。我们开发了一个简单的模型系统,该系统能够在Cu(II)-咪唑单核配合物存在的情况下,实现作为酪氨酸模型的4-叔丁基苯酚整体转化为类似TPQ的对羟基醌结构。