Investigation of the Mechanism of Action of Pyrogallol–Phloroglucinol Transhydroxylase by Using Putative Intermediates
作者:Csaba Paizs、Ulrike Bartlewski-Hof、János Rétey
DOI:10.1002/chem.200601053
日期:2007.3.26
properties. We also describe the synthesis and characterization of 3,4,5,3',4',5'-hexahydroxydiphenyl ether. Both compounds could substitute for the cocatalyst in vitro. This indicates that the diphenyl ethers can intrude into the active site and initiate the catalytic cycle. Recently, the X-ray crystal structure of the transhydroxylase (TH) was published16 and it supports the proposed mechanism of hydroxy-group
产自Pelobacter acidigallici的邻苯三酚-间苯三酚-羟化酶(一种含钼蝶呤的酶)催化芳香化合物厌氧降解中的关键反应。在体外,酶促反应需要1,2,3,5-四羟基苯作为助催化剂,并且发生转移羟基化反应而无需与水中的羟基交换。为了测试我们先前的建议,即通过2,4,6,3',4',5'-六羟基二苯醚作为中间体进行羟基转移,我们合成了该化合物并研究了其性能。我们还描述了3,4,5,3',4',5'-六羟基二苯醚的合成和表征。两种化合物都可以在体外替代助催化剂。这表明二苯醚可侵入活性位点并引发催化循环。最近,