Design and synthesis of chromogenic thiopeptolide substrates as MetAPs active site probes
作者:Yong-Mei Cui、Jing-Ya Li、Ling-Ling Chen、Jia Li、Qi-Zhuang Ye、Fa-Jun Nan
DOI:10.1016/j.bmc.2004.03.044
日期:2004.6
Twenty one chromogenic thiopeptolide substrates were designed and synthesized as the active site probes and analyzed with each S1 site of mutant residues and enzymes of wild-type MetAP1s. The preliminary enzymatic experiments indicate that cysteine 70 or 202, at either Escherichia coli or human MetAP1, played a crucial role in the methionine hydrolysis.
设计并合成了二十一种生色硫代peptolide底物作为活性位点探针,并用突变型残基的每个S1位点和野生型MetAP1s的酶进行了分析。初步的酶促实验表明,大肠杆菌或人MetAP1上的半胱氨酸70或202在蛋氨酸水解中起着至关重要的作用。