Ferritins for Chemistry and for Life.

Ferritins for Chemistry and for Life.
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DOI:
10.1016/j.ccr.2012.05.013
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发表时间:
2013-01-15
影响因子:
20.6
通讯作者:
Tosha T
Tosha T
中科院分区:
化学1区
文献类型:
--
作者:
Theil EC;Behera RK;Tosha T

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铁蛋白是高度对称的蛋白质纳米笼,是 Fe2+ 和双氧或过氧化氢的反应器,存在于所有生命王国和多细胞生物的许多不同细胞中。它们合成细胞制造铁蛋白辅因子(血红素、FeS、单铁和二铁)所需的铁浓缩物。笼状铁蛋白生物矿物质 Fe2O3·H2O 也是抗氧化剂,可作为从受损蛋白质中清除的铁和氧化剂的接收器。铁蛋白生物合成的遗传调控对铁和氧化剂都很敏感。在这里,重点是铁蛋白氧化还原酶化学、Fe 2+ 进出蛋白质笼的铁蛋白离子通道和Fe 3+ O矿物成核,以及铁蛋白笼在纳米催化和纳米材料合成中的用途。 Fe2+ 和 O 铁蛋白反应器可能对地球上从无氧生命向有氧生命的转变至关重要,在平衡生物学中的铁和氧化学方面发挥着核心的当代作用,并在纳米技术中发挥着新兴作用。
Ferritins, highly symmetrical protein nanocages, are reactors for Fe2+ and dioxygen or hydrogen peroxide that are found in all kingdoms of life and in many different cells of multicellular organisms. They synthesize iron concentrates required for cells to make cofactors of iron proteins (heme, FeS, mono and diiron). The caged ferritin biominerals, Fe2O3•H2O are also antioxidants, acting as sinks for iron and oxidants scavenged from damaged proteins; genetic regulation of ferritin biosynthesis is sensitive to both iron and oxidants. Here, the emphasis here is ferritin oxidoreductase chemistry, ferritin ion channels for Fe 2+ transit into and out of the protein cage and Fe 3+ O mineral nucleation, and uses of ferritin cages in nanocatalysis and nanomaterial synthesis. The Fe2+ and O ferritin protein reactors, likely critical in the transition from anaerobic to aerobic life on earth, play central, contemporary roles that balance iron and oxygen chemistry in biology and have emerging roles in nanotechnology.
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