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Toxic clumps trap many proteins

机译:有毒团块捕获许多蛋白质

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摘要

Neurodegenerative disorders such as Parkinson's disease are marked by the presence of toxic protein aggregates in brain cells. These aggregates seem to ensnare a range of proteins that share certain biochemical features and are involved in important cellular processes. Martin Vabulas at the Max Planck Institute of Biochemistry in Martinsried, Germany, and his colleagues designed artificial (5-sheet proteins that form clumps similar to the amyloid fibrils seen in several neurodegenerative diseases. They expressed the proteins in human cells and analysed the native proteins that bound to the aggregates. The researchers found that various proteins involved in RNA processing, protein production and other key functions were caught up in the aggregates: in a few cases, the entangled proportion was as high as 45%. These proteins tended to be larger in size and have more unstructured regions than their non-sequestered counterparts. Moreover, the proteins interact with hundreds of other essential proteins.
机译:神经退行性疾病(如帕金森氏病)的特征是脑细胞中存在有毒蛋白质聚集体。这些聚集体似乎诱捕了共享某些生化特征并参与重要细胞过程的一系列蛋白质。德国马丁斯里德马克斯·普朗克生物化学研究所的马丁·瓦布拉斯(Martin Vabulas)和他的同事设计了人工(5页蛋白质),它们形成的团块类似于在几种神经退行性疾病中见到的淀粉样原纤维。他们在人体细胞中表达蛋白质并分析了天然蛋白质研究人员发现,与RNA加工,蛋白质生产和其他关键功能有关的各种蛋白质都被聚集在聚集物中:在少数情况下,纠缠比例高达45%。蛋白质的大小比非链状蛋白质更大,并且具有更多的非结构化区域,此外,蛋白质还与数百种其他必需蛋白质相互作用。

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  • 来源
    《Nature》 |2011年第7333期|p.143|共1页
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  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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