ISDA

Deposition Date 2010-10-13

Release Date 2010-12-01

Last Version Date 2024-02-21

Entry Detail

PDB ID:

3IZD

Keywords:

RIBOSOME

Title:

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.

Biological Source:

Source Organism:

Saccharomyces cerevisiae (Taxon ID: 4932)

Method Details:

Experimental Method:

ELECTRON MICROSCOPY

Resolution:

8.60 Å

Aggregation State:

PARTICLE

Reconstruction Method:

SINGLE PARTICLE

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Macromolecular Entities

Polymer Type:polyribonucleotide
Molecule:rRNA expansion segment ES27L in an "out" conformation
Chain IDs:A
Chain Length:151
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

Ligand Molecules

Primary Citation

Cryo-EM structure and rRNA model of a translating eukaryotic 80S ribosome at 5.5-A resolution.

Armache, J.P, Jarasch, A, Anger, A.M, Villa, E, Becker, T, Bhushan, S, Jossinet, F, Habeck, M, Dindar, G, Franckenberg, S, Marquez, V, Mielke, T, Thomm, M, Berninghausen, O, Beatrix, B, Soding, J, Westhof, E, Wilson, D.N, Beckmann, R, Armache, J.P, Jarasch, A, Anger, A.M, Villa, E, Becker, T, Bhushan, S, Jossinet, F, Habeck, M, Dindar, G, Franckenberg, S, Marquez, V, Mielke, T, Thomm, M, Berninghausen, O, Beatrix, B, Soding, J, Westhof, E, Wilson, D.N, Beckmann, R.Show

Proc.Natl.Acad.Sci.USA 107 19748 19753 (2010)

PMID: 20980660 DOI: 10.1073/pnas.1009999107

Abstact

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.

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