Electronic Structure and Spectro-Structural Correlations of Fe<sup>III</sup>Zn<sup>II</sup> Biomimetics for Purple Acid Phosphatases: Relevance to DNA Cleavage and Cytotoxic Activity
作者:Rosely A. Peralta、Adailton J. Bortoluzzi、Bernardo de Souza、Rafael Jovito、Fernando R. Xavier、Ricardo A. A. Couto、Annelise Casellato、Faruk Nome、Andrew Dick、Lawrence. R. Gahan、Gerhard Schenk、Graeme R. Hanson、Flávia C. S. de Paula、Elene C. Pereira-Maia、Sergio de P. Machado、Patricia C. Severino、Claus Pich、Tiago Bortolotto、Hernán Terenzi、Eduardo E. Castellano、Ademir Neves、Mark J. Riley
DOI:10.1021/ic101433t
日期:2010.12.20
Purple acid phosphatases (PAPs) are a group of metallohydrolases that contain a dinuclear FeIIIMII center (MII = Fe, Mn, Zn) in the active site and are able to catalyze the hydrolysis of a variety of phosphoric acid esters. The dinuclear complex [(H2O)FeIII(μ-OH)ZnII(L-H)](ClO4)2 (2) with the ligand 2-[N-bis(2-pyridylmethyl)aminomethyl]-4-methyl-6-[N′-(2-pyridylmethyl)(2-hydroxybenzyl) aminomethyl]phenol
紫色酸性磷酸酶(PAP)是一组金属水解酶,在活性位点包含一个双核Fe III M II中心(M II = Fe,Mn,Zn),并且能够催化多种磷酸酯的水解。双核配合物[(H 2 O)Fe III(μ-OH)Zn II(LH)](ClO 4)2(2)与配体2- [ N-双(2-吡啶基甲基)氨基甲基] -4-甲基-6- [ N '-(2-吡啶基甲基)(2-羟基苄基)氨基甲基]苯酚(H 2 L-H)已于近日编制并发现其密切模仿的FE的协调环境III锌II在红芸豆PAP发现活性部位(内韦斯等人J.化学会会志,2007,129,7486)。仿生菌在水解反应中显示出显着的催化活性。通过使用各种结构,光谱和计算技术,确定了该仿生复合物的Fe III中心的电子结构。在固态中,电子基态反射菱形扭曲的Fe III N 2 O 4八面体,并具有沿μ-OH-Fe-O排列的主要四方压缩酚盐方向。为了探究Fe-O酚酸