Detection of Ras GTPase protein radicals through immuno-spin trapping.

Detection of Ras GTPase protein radicals through immuno-spin trapping.
复制标题

DOI:
10.1016/j.freeradbiomed.2012.07.009
复制
发表时间:
2012-09-15
影响因子:
7.4
通讯作者:
Campbell, Sharon L.
Campbell, Sharon L.
中科院分区:
医学1区
文献类型:
--
作者:
Davis, Michael F.;Zhou, Li;Ehrenshaft, Marilyn;Ranguelova, Kalina;Gunawardena, Harsha P.;Chen, Xian;Bonini, Marcelo G.;Mason, Ronald P.;Campbell, Sharon L.

文献摘要

参考文献

被引文献

相似文献

在过去的十年中,免疫自旋捕获(IST)已被用于检测和鉴定蛋白质自由基的网站在许多血红素和金属蛋白。然而,迄今为止,该技术对非金属蛋白的应用很少。在这项研究中,我们证明了成功的应用IST在一个系统中的过渡金属,并提出了第一个确凿的证据·NO介导的蛋白质自由基形成的HRas GTdR。HRas是一种非金属蛋白,在调节细胞生长控制中起关键作用。Ras GTP酶中蛋白自由基的形成一直被怀疑是引发结合鸟嘌呤核苷酸的过早释放的原因。这种作用导致体外和体内Ras活性的改变。如本文所述,IST的成功应用可以提供用于检测和鉴定Ras GTP酶发挥重要作用的许多不同癌症和疾病状态中的自由基介导的Ras活化的手段。
Over the past decade immuno-spin trapping (IST) has been used to detect and identify protein radical sites in numerous heme and metalloproteins. To date, however, the technique has had little application toward non-metalloproteins. In this study, we demonstrate the successful application of IST in a system free of transition metals and present the first conclusive evidence of ·NO-mediated protein radical formation in the HRas GTPase. HRas is a non-metalloprotein that plays a critical role in regulating cell growth control. Protein radical formation in Ras GTPases has long been suspected of initiating premature release of bound guanine nucleotide. This action results in altered Ras activity both in vitro and in vivo. As described herein, successful application of IST may provide a means for detecting and identifying radical-mediated Ras activation in many different cancers and disease states where Ras GTPases play an important role.
DOI: 10.2337/diabetes.54.4.959
发表时间: 2005-04-01
期刊: DIABETES
影响因子: 7.7
作者:
Carvalho, MA;Ueno, M;Saad, MJA
通讯作者: Saad, MJA
DOI: 10.1021/ja973655h
发表时间: 1999-02-03
影响因子: 15
作者:
Kelleher, NL;Lin, HY;McLafferty, FW
通讯作者: McLafferty, FW
DOI: 10.1074/jbc.m310704200
发表时间: 2004-03-19
影响因子: 4.8
作者:
Deterding, LJ;Ramirez, DC;Tomer, KB
通讯作者: Tomer, KB
DOI: 10.1016/j.jmb.2004.12.050
发表时间: 2005-03-11
影响因子: 5.6
作者:
Heo, J;Prutzman, KC;Campbell, SL
通讯作者: Campbell, SL
DOI: 10.1016/j.freeradbiomed.2011.05.003
发表时间: 2011-08-01
影响因子: 7.4
作者:
Davis, Michael F.;Vigil, Dom;Campbell, Sharon L.
通讯作者: Campbell, Sharon L.