REL PDBe PDBe PDBe 2014-11-04 2014-12-24 2015-01-07 2015-01-07 Shen PS Park J Qin Y Li X Parsawar K Larson M Cox J Cheng Y Lambowitz AM Weissman JS Brandman O Frost A ribosome quality control complex, RQC, eukaryotic ribosome rescue, stalled nascent chain Shen PS Park J Qin Y Li X Parsawar K Larson M Cox J Cheng Y Lambowitz AM Weissman JS Brandman O Frost A SCIENCE 347 75 78 2015 doi:10.1126/science.1259724 RQC particles purified by co-IP of Rqc1 RQC particles purified by co-IP of Rqc1 1 60S ribosome false Saccharomyces cerevisiae BY4741 Baker's yeast ribosome-eukaryote: LSU 60S, LSU RNA 28S, LSU RNA 5.8S, LSU RNA 5S singleParticle particle 7.4

100mM KOAc, 10mM MgCl2, 25mM HEPES-KOH

200 mesh Quantifoil R2/2 grid + lacey carbon grid with ultrathin carbon

ETHANE 75 90 FEI VITROBOT MARK III Blot for 3 seconds before plunging FEI POLARA 300 FLOOD BEAM BRIGHT FIELD FIELD EMISSION GUN 300 2 0.8 2.0 31000.0 GATAN LIQUID NITROGEN 80 90 85 Gatan

UCSF Image4 on-the-fly motion correction

2013-07-22 GATAN K2 (4k x 4k) 3459 35 8. LN2 cooled 0 0

Particles were selected using the semi-automated swarm tool in e2boxer.py of the EMAN2 package. All 2D and 3D processing was performed in RELION.

each particle

C1 3.5 OTHER RELION, CTFFIND3

micrographs were motion-corrected via the UCSFImage4 package; final resolution was calculated by applying a soft mask around the ribosome

79423 1