作者:Nguyen-Hai Nam、Sungsoo Lee、Guofeng Ye、Gongqin Sun、Keykavous Parang
DOI:10.1016/j.bmc.2004.08.043
日期:2004.11
A number of Src SH2 domain inhibitors enhance the kinase catalytic activity by switching the closed inactive to the open active conformation. ATP-phosphopeptide conjugates were designed and synthesized as Src tyrosine kinase inhibitors based on a tetrapeptide sequence pTyr-Glu-Glu-Ile (pYEEI) and ATP to block the SH2 domain signaling and substrate phosphorylation by ATP, respectively. In general, ATP-phosphopeptide
许多Src SH2域抑制剂可通过将封闭的非活性构象切换为开放的活性构象来增强激酶的催化活性。基于四肽序列pTyr-Glu-Glu-Ile(pYEEI)和ATP,设计并合成了ATP-磷酸肽共轭物作为Src酪氨酸激酶抑制剂,以分别阻断SH2结构域信号传导和ATP底物磷酸化。通常,相对于具有短或长接头的其他ATP-磷酸肽缀合物,具有最佳接头(例如化合物5和7,K(i)= 1.7-2.6 microM)的ATP-磷酸肽缀合物显示出更高的对ATP结合位点的结合亲和力,1-4和6(K(i)= 10.1-16.1 microM)和ATP(K(m)= 74 microM)。