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The Lure of a LYR: The Logistics of Iron Sulfur Cluster Delivery

机译:LYR的诱惑:铁硫团簇交付的物流

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How are nascent iron-sulfur (Fe-S) clusters directed to specific recipient proteins? In this issue of Cell Metabolism, Maio et al. (2014) show that the mitochondrial Fe-S cochaperone protein HSC20 guides nascent Fe-S dusters based on a highly conserved motif, LYR, that exists in target proteins in different molecular contexts.Iron-sulfur (Fe-S) clusters are composed of nonheme iron and inorganic sulfide (Rouault, 2012). These crucial prosthetic groups are necessary for a wide variety of protein functions including single electron transfers, enzymatic catalysis, and "on-off" switching in key metabolic pathways (e.g., cellular iron metabolism) (Rouault, 2012). Genetic disruptions affecting key proteins involved in Fe-S cluster biogenesis are now known to cause an increasing number of human diseases, such as Friedreich's ataxia and sideroblastic-like microcytic anemia (Rouault, 2012).
机译:新生的铁硫(Fe-S)簇如何定向到特定的受体蛋白?在本期《细胞代谢》一书中,Maio等人。 (2014)表明线粒体Fe-S伴娘蛋白HSC20指导新生的Fe-S on粉基于高度保守的基序LYR,该基序存在于不同分子环境下的靶蛋白中。铁-硫(Fe-S)簇由非血红素铁和无机硫化物(Rouault,2012年)。这些关键的修复基团对于多种蛋白质功能是必需的,包括单电子转移,酶催化和关键代谢途径(例如细胞铁代谢)中的“开关”转换(Rouault,2012年)。现已知道,影响Fe-S簇生物发生的关键蛋白质的遗传破坏会引起越来越多的人类疾病,例如弗里德里希共济失调和铁粒幼细胞样贫血(Rouault,2012)。

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