Molecular guardians for newborn proteins : ribosome-associated chaperones and their role in protein folding

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Molecular_guardians_for_newborn_proteins.pdf
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2005
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Wegrzyn, Renee D.
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Cellular and Molecular Life Sciences. 2005, 62(23), pp. 2727-2738. ISSN 1420-682X. eISSN 1420-9071. Available under: doi: 10.1007/s00018-005-5292-z
Zusammenfassung

A central dogma in biology is the conversion of genetic information into active proteins. The biosynthesis of proteins by ribosomes and the subsequent folding of newly made proteins represent the last crucial steps in this process. To guarantee the correct folding of newly made proteins, a complex chaperone network is required in all cells. In concert with ongoing protein biosynthesis, ribosome-associated factors can interact directly with emerging nascent polypeptides to protect them from degradation or aggregation, to promote folding into their native structure, or to otherwise contribute to their folding program. Eukaryotic cells possess two major ribosome-associated systems, an Hsp70/Hsp40-based chaperone system and the functionally enigmatic NAC complex, whereas prokaryotes employ the Trigger Factor chaperone. Recent structural insights into Trigger Factor reveal an intricate cradle-like structure that, together with the exit site of the ribosome, forms a protected environment for the folding of newly synthesized proteins.

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570 Biowissenschaften, Biologie
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Trigger Factor, Ssb, Zuotin, NAC, co-translational protein folding, ribosome
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ISO 690WEGRZYN, Renee D., Elke DEUERLING, 2005. Molecular guardians for newborn proteins : ribosome-associated chaperones and their role in protein folding. In: Cellular and Molecular Life Sciences. 2005, 62(23), pp. 2727-2738. ISSN 1420-682X. eISSN 1420-9071. Available under: doi: 10.1007/s00018-005-5292-z
BibTex
@article{Wegrzyn2005Molec-8680,
  year={2005},
  doi={10.1007/s00018-005-5292-z},
  title={Molecular guardians for newborn proteins : ribosome-associated chaperones and their role in protein folding},
  number={23},
  volume={62},
  issn={1420-682X},
  journal={Cellular and Molecular Life Sciences},
  pages={2727--2738},
  author={Wegrzyn, Renee D. and Deuerling, Elke}
}
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    <dcterms:abstract xml:lang="eng">A central dogma in biology is the conversion of genetic information into active proteins. The biosynthesis of proteins by ribosomes and the subsequent folding of newly made proteins represent the last crucial steps in this process. To guarantee the correct folding of newly made proteins, a complex chaperone network is required in all cells. In concert with ongoing protein biosynthesis, ribosome-associated factors can interact directly with emerging nascent polypeptides to protect them from degradation or aggregation, to promote folding into their native structure, or to otherwise contribute to their folding program. Eukaryotic cells possess two major ribosome-associated systems, an Hsp70/Hsp40-based chaperone system and the functionally enigmatic NAC complex, whereas prokaryotes employ the Trigger Factor chaperone. Recent structural insights into Trigger Factor reveal an intricate cradle-like structure that, together with the exit site of the ribosome, forms a protected environment for the folding of newly synthesized proteins.</dcterms:abstract>
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