A possible mechanism for redox control of human neuroglobin activity.
A possible mechanism for redox control of human neuroglobin activity.
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人类神经球蛋白活性氧化还原控制的可能机制。
DOI:
10.1021/ci5002108
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发表时间:
2014-07-28
影响因子:
5.6
通讯作者:
Chatfield DC
中科院分区:
文献类型:
--
作者:
Morozov AN;Roach JP;Kotzer M;Chatfield DC
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.
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影响因子:
5.7
作者:
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通讯作者:
Bolognesi, M
影响因子:
3.3
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Miksovska, Jaroslava