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TitleCryo-EM structure and rRNA model of a translating eukaryotic 80S ribosome at 5.5-A resolution.
Journal, issue, pagesProc Natl Acad Sci U S A, Vol. 107, Issue 46, Page 19748-19753, Year 2010
Publish dateNov 16, 2010
AuthorsJean-Paul Armache / Alexander Jarasch / Andreas M Anger / Elizabeth Villa / Thomas Becker / Shashi Bhushan / Fabrice Jossinet / Michael Habeck / Gülcin Dindar / Sibylle Franckenberg / Viter Marquez / Thorsten Mielke / Michael Thomm / Otto Berninghausen / Birgitta Beatrix / Johannes Söding / Eric Westhof / Daniel N Wilson / Roland Beckmann /
PubMed AbstractProtein biosynthesis, the translation of the genetic code into polypeptides, occurs on ribonucleoprotein particles called ribosomes. Although X-ray structures of bacterial ribosomes are available, ...Protein biosynthesis, the translation of the genetic code into polypeptides, occurs on ribonucleoprotein particles called ribosomes. Although X-ray structures of bacterial ribosomes are available, high-resolution structures of eukaryotic 80S ribosomes are lacking. Using cryoelectron microscopy and single-particle reconstruction, we have determined the structure of a translating plant (Triticum aestivum) 80S ribosome at 5.5-Å resolution. This map, together with a 6.1-Å map of a Saccharomyces cerevisiae 80S ribosome, has enabled us to model ∼98% of the rRNA. Accurate assignment of the rRNA expansion segments (ES) and variable regions has revealed unique ES-ES and r-protein-ES interactions, providing insight into the structure and evolution of the eukaryotic ribosome.
External linksProc Natl Acad Sci U S A / PubMed:20980660 / PubMed Central
MethodsEM (single particle)
Resolution8.6 - 8.8 Å
Structure data

PDB-3izd:
Model of the large subunit RNA expansion segment ES27L-out based on a 6.1 A cryo-EM map of Saccharomyces cerevisiae translating 80S ribosome. 3IZD is a small part (an expansion segment) which is in an alternative conformation to what is in already 3IZF.
Method: ELECTRON MICROSCOPY / Resolution: 8.6 Å

PDB-4v6i:
Localization of the small subunit ribosomal proteins into a 6.1 A cryo-EM map of Saccharomyces cerevisiae translating 80S ribosome
Method: ELECTRON MICROSCOPY / Resolution: 8.8 Å

Source
  • saccharomyces cerevisiae (brewer's yeast)
KeywordsRIBOSOME / eukaryotic ribosome / homology modelling / de novo modeling / ribosomal RNA / rRNA / RNA expansion segments / homology modeling / ribosomal proteins / novel ribosomal proteins

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