Mind the Metal: A Fragment Library-Derived Zinc Impurity Binds the E2 Ubiquitin-Conjugating Enzyme Ube2T and Induces Structural Rearrangements
作者:Francesca E. Morreale、Andrea Testa、Viduth K. Chaugule、Alessio Bortoluzzi、Alessio Ciulli、Helen Walden
DOI:10.1021/acs.jmedchem.7b01071
日期:2017.10.12
false positives that permeate the pool of initial hits. Here, we report the discovery of a promising initial hit compound targeting the Fanconi anemia ubiquitin-conjugating enzyme Ube2T and describe its biophysical and biochemical characterization. Analysis of the co-crystal structure led to the identification of a contaminating zinc ion as solely responsible for the observed effects. Zinc binding to
使用小分子文库开发生物反应的抑制剂,活化剂和效应物的努力通常会受到干扰化合物,伪影和假阳性的影响,这些干扰物,假阳性和假阳性会渗透到最初的打击中。在这里,我们报道了针对范可尼贫血泛素结合酶Ube2T的有希望的初始命中化合物的发现,并描述了其生物物理和生化特性。对共晶体结构的分析导致鉴定出污染的锌离子是造成观察到的效应的唯一原因。锌结合到活性位点的半胱氨酸诱导Ube2T中的域交换,从而导致以开放式线性组装形式组织的循环三聚。