@article{Kramer2002prote-7978,
  year={2002},
  doi={10.1038/nature01047},
  title={L23 protein functions as a chaperone docking site on the ribosome},
  number={6903},
  volume={419},
  issn={0028-0836},
  journal={Nature},
  pages={171--174},
  author={Kramer, Günter and Rauch, Thomas and Rist, Wolfgang and Vorderwülbecke, Sonja and Patzelt, Holger and Schulze-Specking, Agnes and Ban, Nenad and Deuerling, Elke and Bukau, Bernd}
}

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    <dc:creator>Kramer, Günter</dc:creator>
    <dc:contributor>Kramer, Günter</dc:contributor>
    <dc:contributor>Vorderwülbecke, Sonja</dc:contributor>
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    <dc:contributor>Deuerling, Elke</dc:contributor>
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    <dc:contributor>Patzelt, Holger</dc:contributor>
    <dc:creator>Vorderwülbecke, Sonja</dc:creator>
    <dc:creator>Rist, Wolfgang</dc:creator>
    <dc:creator>Ban, Nenad</dc:creator>
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    <dc:creator>Bukau, Bernd</dc:creator>
    <dc:contributor>Rist, Wolfgang</dc:contributor>
    <dc:contributor>Ban, Nenad</dc:contributor>
    <dcterms:issued>2002</dcterms:issued>
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    <dc:creator>Patzelt, Holger</dc:creator>
    <dc:contributor>Schulze-Specking, Agnes</dc:contributor>
    <dcterms:title>L23 protein functions as a chaperone docking site on the ribosome</dcterms:title>
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    <dc:contributor>Bukau, Bernd</dc:contributor>
    <dc:creator>Deuerling, Elke</dc:creator>
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    <dc:creator>Rauch, Thomas</dc:creator>
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    <dc:creator>Schulze-Specking, Agnes</dc:creator>
    <dcterms:bibliographicCitation>First publ. in: Nature 419 (2002), pp. 171-174</dcterms:bibliographicCitation>
    <dc:contributor>Rauch, Thomas</dc:contributor>
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    <dcterms:abstract xml:lang="eng">During translation, the first encounter of nascent polypeptides is with the ribosome-associated chaperones that assist the folding process a principle that seems to be conserved in evolution. In Escherichia coli, the ribosome-bound Trigger Factor chaperones the folding of cytosolic proteins by interacting with nascent polypeptides. Here we identify a ribosome-binding motif in the amino-terminal domain of Trigger Factor. We also show the formation of crosslinked products between Trigger Factor and two adjacent ribosomal proteins, L23 and L29, which are located at the exit of the peptide tunnel in the ribosome. L23 is essential for the growth of E. coli and the association of Trigger Factor with the ribosome, whereas L29 is dispensable in both processes. Mutation of an exposed glutamate in L23 prevents Trigger Factor from interacting with ribosomes and nascent chains, and causes protein aggregation and conditional lethality in cells that lack the protein repair function of the DnaK chaperone. Purified L23 also interacts specifically with Trigger Factor in vitro. We conclude that essential L23 provides a chaperone docking site on ribosomes that directly links protein biosynthesis with chaperoneassisted protein folding.</dcterms:abstract>
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