Multi-heme proteins: nature's electronic multi-purpose tool.

Multi-heme proteins: nature's electronic multi-purpose tool.
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DOI:
10.1016/j.bbabio.2013.03.010
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发表时间:
2013-08
影响因子:
4.3
通讯作者:
Elliott, Sean J.
Elliott, Sean J.
中科院分区:
生物学2区
文献类型:
--
作者:
Bewley, Kathryn D.;Ellis, Katie E.;Firer-Sherwood, Mackenzie A.;Elliott, Sean J.

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虽然铁对生物学来说通常是一种限制性营养物质,但当这种元素以血红素辅因子(铁原卟啉IX)的形式被发现时,生命系统在修改和定制金属的化学方面表现出色。在蛋白质和酶的背景下,血红素辅助因子在化学计量比中越来越多地被发现,其中单个蛋白质大分子包含一个以上的血红素单位。当配对或结合在一起时,这些与蛋白质相关的血红素基团执行各种任务,如氧化还原通讯、远程电子转移和存储还原/氧化等效物。在这里,我们回顾了多血红素蛋白领域的最新进展,重点介绍了这些复杂的氧化还原蛋白的紧急性质,以及在自然界中发现的策略,其中这些蛋白似乎是更大的生化途径的模块和必要组件。
While iron is often a limiting nutrient to Biology, when the element is found in the form of heme cofactors (iron protoporphyrin IX), living systems have exceled at modifying and tailoring the chemistry of the metal. In the context of proteins and enzymes, heme cofactors are increasingly found in stoichiometries greater than one, where a single protein macromolecule contains more than one heme unit. When paired or coupled together, these protein associated heme groups perform a wide variety of tasks, such as redox communication, long range electron transfer and storage of reducing/oxidizing equivalents. Here, we review recent advances in the field of multi-heme proteins, focusing on emergent properties of these complex redox proteins, and strategies found in Nature where such proteins appear to be modular and essential components of larger biochemical pathways.
DOI: 10.1042/bst20120106
发表时间: 2012-12-01
影响因子: 3.9
作者:
Bewley, Kathryn D.;Firer-Sherwood, Mackenzie A.;Elliott, Sean J.
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