How Is Fe-S Cluster Formation Regulated?

How Is Fe-S Cluster Formation Regulated?
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DOI:
10.1146/annurev-micro-091014-104457
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发表时间:
2015
影响因子:
10.5
通讯作者:
Kiley PJ
Kiley PJ
中科院分区:
生物学1区
文献类型:
--
作者:
Mettert EL;Kiley PJ

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铁-硫(Fe-S)簇是大多数生物体中众多生物学过程的基础,但这些蛋白质辅因子容易被各种氧化剂(例如,O2、活性氧和活性氮)和某些金属的毒性水平(例如,钴和铜)。此外,它们的合成也可以直接受到环境中可用铁水平的影响。因此,Fe-S簇生物发生的细胞需要随着波动的生长条件而变化。为了适应Fe-S需求的变化,微生物采用不同的调控策略来根据其周围环境定制Fe-S簇生物合成。在这里,我们审查的机制,调节Fe-S簇在细菌中的形成,主要集中在控制的Isc和Suf Fe-S簇生物合成系统的模式细菌大肠杆菌。
Iron-sulfur(Fe-S)clustersarefundamentaltonumerousbiologicalprocesses in most organisms, but these protein cofactors can be prone to damage by various oxidants (e.g., O2, reactive oxygen species, and reactive nitrogen species) and toxic levels of certain metals (e.g., cobalt and copper). Furthermore, their synthesis can also be directly influenced by the level of available iron in the environment. Consequently, the cellular need for Fe-S cluster biogenesis varies with fluctuating growth conditions. To accommodate changes in Fe-S demand, microorganisms employ diverse regulatory strategies to tailor Fe-S cluster biogenesis according to their surroundings. Here, we review the mechanisms that regulate Fe-S cluster formation in bacteria, primarily focusing on control of the Isc and Suf Fe-S cluster biogenesis systems in the model bacterium Escherichia coli.
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