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An international collaboration among researchers from Finland, Sweden, UK and the USA has captured ribosomes translating messenger RNA expressed from the maternally inherited mitochondrial genome. Utilising the latest advances in cryo-electron microscopy, the group discovered a novel mechanism that mitochondrial ribosomes use for the synthesis and delivery of newly made proteins to prevent premature misfolding. Disruptions to protein folding can lead to devastating human diseases.
There is a familiar saying, “It’s all in the genes”. As modern archaeology reveals, the DNA that encodes genes can be found among the remnants of our ancestors and from any organism, small and large, that once roamed the earth. The genetic blueprint alone is not sufficient; life requires the faithful expression and translation of our genomes. Basic research in molecular biology has revealed in beautiful detail the mechanisms by which these fundamental processes operate. One of these pioneering
Ribosomes Shown Translating mRNA from Maternally Inherited Mitochondrial Genome
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Study reveals mechanism for translation of maternally inherited mitochondrial genome
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Credit: A. Amunts and D. Nowakowski
An international collaboration among researchers from Finland, Sweden, UK and the USA has captured ribosomes translating messenger RNA expressed from the maternally inherited mitochondrial genome. Utilising the latest advances in cryo-electron microscopy, the group discovered a novel mechanism that mitochondrial ribosomes use for the synthesis and delivery of newly made proteins to prevent premature misfolding. Disruptions to protein folding can lead to devastating human diseases.
There is a familiar saying, It s all in the genes . As modern archaeology reveals, the DNA that encodes genes can be found among the remnants of our ancestors and from any organism, small and large, that once roamed the earth. The genetic blueprint alone is not sufficient; life requires the faithful expression and translation of our genomes. Basic research in molecular biology has revealed in beautiful detail the mechanisms by which these fundamental processes oper
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IMAGE: The mitoribosome is attached to its membrane adaptor as it synthesises a bioenergetic protein (glow yellow). view more
Credit: Dan W. Nowakowski and Alexey Amunts
Scientists uncover for the first time how the body s energy makers are made using Cryo-Electron Microscopy (cryo-EM) at eBIC within Diamond which is based in Oxfordshire.
A new paper published in
Science today (19 February 2021) by an international team of researchers reports an insight into the molecular mechanism of membrane-tethered protein synthesis in mitochondria. This is a fundamental new understanding of how the human mitoribosome functions and could explain how it is affected by mutations and deregulation that lead to disorders such as deafness and diseases including cancer development.