2018-01-24 REL RCSB RCSB RCSB 2016-12-22 2017-02-01 2018-01-24 2018-01-24 Liu WL Singh SK Singh SK Qiao Z Song L Jani V Rice W Eng E Coleman RA Liu WL Genes and Development 30 2527 2537 2016 27920087 doi:10.1101/gad.285692.116 1549-5477 EMD-8538 associated EM volume Binary complex of p53 with human RNA polymerase II Binary complex of p53 with human RNA polymerase II 0

Assembly of native human RNA Polymerase II with human recombinant full-length p53

Homo sapiens HeLa cells 0.57 singleParticle particle 0.026 7.9 20.0 Hepes Hepes 0.2 EDTA EDTA 2.0 MgCl2 MgCl2 10.0 Glycerol 100.0 KCl Potassium chloride

plus 0.05% NP40, 1 mM DTT and 0.5 mM PMSF

Protochips CF-1.2/1.3-4C 400 CARBON HOLEY GLOW DISCHARGE

A thin carbon film supported by a 400-mesh carbon-thickened C-flat holey grid with hole diameter 1.2 micron/spacing 1.3 micron (CF-1.2/1.3-4C, Protochips) was freshly glow discharged using a high-vacuum evaporator (Denton).

ETHANE 100 278.65 FEI VITROBOT MARK III

The assembled p53/Pol II co-complex was applied directly on the grid for 10 seconds followed by 5.5 seconds of blotting. The sample grid was then washed with 3.5 % Trehalose in 0.1 M KCl/HEM buffer (20 mM HEPES, 0.2 mM EDTA, 2 mM MgCl2, pH 7.9) for 10 seconds, blotted for 5.5 seconds and finally plunged frozen in liquid ethane..

FEI TITAN KRIOS FLOOD BEAM BRIGHT FIELD FIELD EMISSION GUN 300 2.7 0.5 3.0 22500. FEI TITAN KRIOS AUTOGRID HOLDER NITROGEN GATAN K2 SUMMIT (4k x 4k) COUNTING 66.8 1 CTFIND3 270 50 2 C1 10.8 FSC 0.143 CUT-OFF RELION 1.4 8097 PROJECTION MATCHING RELION 1.4 PROJECTION MATCHING RELION 1.4 2 RELION 1.4