Dioxygen controls the nitrosylation reactions of a protein-bound [4Fe4S] cluster.
Dioxygen controls the nitrosylation reactions of a protein-bound [4Fe4S] cluster.
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双氧控制蛋白质结合的 [4Fe4S] 簇的亚硝基化反应。
DOI:
10.1039/c9dt00924h
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
Grabarczyk DB
中科院分区:
文献类型:
--
作者:
Grabarczyk DB
Iron–sulfur clusters are exceptionally tuneable protein cofactors, and as one of their many roles they are involved in biological responses to nitrosative stress. Both iron–sulfur proteins and synthetic model clusters are extremely sensitive to nitrosylation, tending towards rapid multi-step reaction and cluster degradation. Reaction of protein-bound iron–sulfur clusters with nitric oxide can be stopped at partial nitrosylation in vivo, and repair of protein-bound nitrosylated clusters is possible in the cellular environment. We have used a combination of infrared, EPR, and UV-visible spectroscopies to show that a model [4Fe4S] cluster-containing protein, A. ferroxidans high potential iron–sulfur protein (HiPIP), reacts with NO to give a product mixture dominated by Roussin's Black Salt (RBS) and Roussin's Red Ester (RRE) species. We have shown that O2 plays a critical role in controlling the major product of nitrosylation, with RBS-like products favoured under strictly anaerobic conditions and RRE favoured in the presence of trace O2. Moreover, addition of trace O2 to anaerobically nitrosylated samples induces conversion of RBS-like products to RRE. These findings may have implications for mechanisms of iron–sulfur cluster repair following nitrosative stress, suggest a crucial role for trace O2, and provide an important link between nitrosylation chemistry of iron–sulfur proteins and the well-established reactivity of synthetic iron–sulfur clusters.
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DOI:
10.1039/b810230a
发表时间:
2009-02-07
期刊:
Dalton transactions (Cambridge, England : 2003)
影响因子:
--
作者:
Wang R;Camacho-Fernandez MA;Xu W;Zhang J;Li L
通讯作者:
Li L
影响因子:
30.3
作者:
Urbano R;Karlinsey JE;Libby SJ;Doulias PT;Ischiropoulos H;Warheit-Niemi HI;Liggitt DH;Horswill AR;Fang FC
通讯作者:
Fang FC
影响因子:
4.1
作者:
LEWIS, RS;DEEN, WM
通讯作者:
DEEN, WM
DOI:
--
发表时间:
1990
期刊:
影响因子:
--
作者:
C. Glidewell;R. Lambert;M. Harman;M. Hursthouse
通讯作者:
M. Hursthouse
影响因子:
15
作者:
Ekanger LA;Oyala PH;Moradian A;Sweredoski MJ;Barton JK
通讯作者:
Barton JK