REL PDBe PDBe PDBe 2009-12-03 2009-12-16 2010-12-22 2012-10-24 Cryo-EM structure of the active yeast 80S ribosome bearing a P-site tRNA and with the rRNA expansion segment ES27 in the exit conformation Becker T Mandon E Bhushan S Jarasch A Armache JP Funes S Jossinet F Gumbart J Mielke T Berninghausen O Schulten K Westhof E Gilmore R Beckmann R Ribosome, protein exit tunnel, cotranslational protein translocation, protein conducting channel, signal sequence Becker T Bhushan S Jarasch A Armache JP Funes S Jossinet F Gumbart J Mielke T Berninghausen O Schulten K Westhof E Gilmore R Mandon EC Beckmann R Structure of monomeric yeast and mammalian Sec61 complexes interacting with the translating ribosome. SCIENCE 326 1369 1373 2009 19933108 doi:10.1126/science.1178535 A programmed yeast ribosome with ES27 in the exit conformation A programmed yeast ribosome with ES27 in the exit conformation
80S ribosomes and the detergent solubilized Ssh1 complex were reconstituted in vitro by adding 1 pmol of ribosome and Ssh1 complex in 5 fold molar excess
80S Ribosome bound to one copy of the heterotrimeric Ssh1 complex 2 4.2 4.2 Known for 80S ribosomes Yeast 80S ribosome bound to the yeast Ssh1 complex false Saccharomyces cerevisiae Baker's Yeast 4.2 4.2 ribosome-eukaryote: ALL singleParticle particle 7.5
20 mM HEPES/KOH, pH 7.5 100 mM KOAc, 10 mM Mg(OAc)2, 1.5 mM DTT, 0.1 % (w/v) digitonin
 NEGATIVE
Cryo-EM
Quantifoil grids (3/3) with 2 nm carbon on top
 ETHANE 95 OTHER
Vitrification instrument: Vitrobot
Blot for 10 seconds before plunging, use 2 layer of filter paper FEI POLARA 300 FLOOD BEAM BRIGHT FIELD FIELD EMISSION GUN 300 2.26 1.2 4.5 39000.0 38000.0 OTHER 84 Objective lens astigmatism was corrected at 100000 times magnification KODAK SO-163 FILM PRIMESCAN 4.76 185 25
Scanned at 5334 dpi
1.2 16. FEI Polara cartridge system 0 0
Particles were selected using the program SIGNATURE and visually inspected. This map resulted from sorting against the ES27 exit position and subsequent sorting for tRNA and the Ssh1 complex and represents the datasubset with ES27 in the exit conformation
Defocus group volumes
 C1 OTHER 7.9 FSC 0.5 CUT-OFF SPIDER
Map was filtered between 8.3 and 10.3 Angstrom to better visualize the rRNA segment ES27 in the exit conformation
69000
SPIDER
 emd_1668.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 368 368 368 -184 -184 -183 368 368 368 455.4 455.4 455.4 90 90 90 Y X Z -3.7418 8.980309999999999 0.0514786 0.710387 1.2375 1.2375 1.2375 1.2 AUTHOR This map represents a yeast 80S ribosome programmed with the first 120 amino acids of the type I signal anchor protein DPAP-B attached to a P-site tRNA. The expansion segment ES27 is in the exit position.
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