A possible mechanism for redox control of human neuroglobin activity.

A possible mechanism for redox control of human neuroglobin activity.
复制标题

人类神经球蛋白活性氧化还原控制的可能机制。

DOI:
10.1021/ci5002108
复制
发表时间:
2014-07-28
影响因子:
5.6
通讯作者:
Chatfield DC
Chatfield DC
中科院分区:
化学2区
文献类型:
--
作者:
Morozov AN;Roach JP;Kotzer M;Chatfield DC

文献摘要

参考文献

被引文献

相似文献

脑红蛋白(Ngb)促进缺氧/缺血条件下的神经元存活。在体内和体外试验提供证据的氧化还原调节功能的Ngb。在X射线晶体结构和分子动力学模拟的基础上,提出了通过CD环对活性位点的影响来控制人Ngb(hNgb)活性的氧化还原机制。我们提供的证据表明,CD环经历了一个链到螺旋的转变时,外部环境变得足够氧化,这种CD环的构象转变导致关键的重组的活性位点。我们假设,链到螺旋力学的CD环允许hNgb利用Cys 46/Cys 55二硫键的不稳定性和Tyr 44/His 64/血红素丙酸盐相互作用网络的hNgb的氧化还原控制功能。
Neuroglobin (Ngb) promotes neuron survival under hypoxic/ischemic conditions. In vivo and in vitro assays provide evidence for redox-regulated functioning of Ngb. On the basis of X-ray crystal structures and our MD simulations, a mechanism for redox control of human Ngb (hNgb) activity via the influence of the CD loop on the active site is proposed. We provide evidence that the CD loop undergoes a strand-to-helix transition when the external environment becomes sufficiently oxidizing, and that this CD loop conformational transition causes critical restructuring of the active site. We postulate that the strand-to-helix mechanics of the CD loop allows hNgb to utilize the lability of Cys46/Cys55 disulfide bonding and of the Tyr44/His64/heme propionate interaction network for redox-controlled functioning of hNgb.
DOI: 10.1016/s0969-2126(03)00166-7
发表时间: 2003-09-01
期刊: STRUCTURE
影响因子: 5.7
作者:
Pesce, A;Dewilde, S;Bolognesi, M
通讯作者: Bolognesi, M
DOI: 10.1021/jp906854x
发表时间: 2009-12-17
影响因子: 3.3
作者:
Bocahut, Anthony;Bernad, Sophie;Sacquin-Mora, Sophie
通讯作者: Sacquin-Mora, Sophie
DOI: 10.1167/iovs.11-7408
发表时间: 2012-02-01
影响因子: 4.4
作者:
Chan, Anita S. Y.;Saraswathy, Sindhu;Rao, Narsing A.
通讯作者: Rao, Narsing A.
DOI: 10.1080/15216540500037257
发表时间: 2004-11-01
期刊: IUBMB LIFE
影响因子: 4.6
作者:
Burmester, T;Haberkamp, M;Hankeln, T
通讯作者: Hankeln, T
DOI: 10.1016/j.bpj.2010.04.033
发表时间: 2010-07-21
影响因子: 3.4
作者:
Astudillo, Luisana;Bernad, Sophie;Miksovska, Jaroslava
通讯作者: Miksovska, Jaroslava