REL PDBe PDBe PDBe 2007-06-22 2007-06-26 2007-11-15 2013-12-11 Structured mRNAs regulate translation initiation by binding to the platform of the ribosome. Marzi S Marzi S Myasnikov AG Serganov A Ehresmann C Romby P Yusupov M Klaholz BP Structured mRNAs regulate translation initiation by binding to the platform of the ribosome. CELL(CAMBRIDGE,MASS.) 130 1019 1031 2007 17889647 doi:10.1016/j.cell.2007.07.008 2vaz FULLOVERLAP 70S pre-initiation complex entrapped by S15-rpsOmRNA 70S pre-initiation complex entrapped by S15-rpsOmRNA
70S E. coli ribosome complexed with S15-rpsOmRNA,stalling Translation Initiation at the pre-initiation step. The structure reveals the molecular details of the Entrapment mechanism.
monomer 3 2.5 70S
E. coli 70S ribosome
false Escherichia coli ribosome-prokaryote: ALL rpsO messanger RNA Escherichia coli GGGCGAAUUCGAGCUCGGUACCCAACGUCGCGUAAAUUGUUUAACACUUUGCGUAACGUACACUGGGAUCGCUGAAUUAGAGAUCGGCGUCCUUUCAUUCUAUAUACUAAGGAGGUUAAAAUGUCUCUAAGUACUGAAGCAACAGCUAAAAUCGUUUCUGAGUUUGGUCGACCUGCAGGCAUGCA OTHER SINGLE STRANDED true Ribosomal protein S15 Escherichia coli
rpsO gene
monomeric true Escherichia coli BL21(DE3) pET11c GO:0006412 IPR005290 singleParticle particle 0.5 7.5
20 mM Tris-HCl pH 7.5, 60 mM KCl, 1mM DTT, 7.5 mM MgCl2
 NEGATIVE
no staining, cryo-EM with holey carbon grids
300 mesh Cu/Rh
 ETHANE HOMEMADE PLUNGER
Vitrification instrument: home-made cryo-plunger
Blot for 2 seconds before plunging FEI TECNAI F20 FLOOD BEAM BRIGHT FIELD FIELD EMISSION GUN 200 2 0.8 3.5 50000.0 51484.0 GATAN LIQUID NITROGEN 77 lens astigmatism was corrected at 50,000 times magnification 2005-01-05 KODAK SO-163 FILM PRIMESCAN 5 67 20 1.8 16. Side entry liquid nitrogen-cooled cryo specimen holder
individual particles
 C1 OTHER 10.0 FSC 0.143 CUT-OFF IMAGIC-5
exact filtered back-projection
31415
beta gamma
 emd_1391.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 120 120 120 -60 -60 -60 120 120 120 360 360 360 90 90 90 X Y Z -9.050319999999999 20.798400000000001 0.140196 1.23037 3 3 3 2.33 Cryo-EM map of the E.coli 70S pre-initiation complex elucidating the entrapment mechanism by the auto-regulatory S15-rpsOmRNA.
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 2AW7 2AWB RIGID BODY FIT O
Protocol: manual. The domains were separately fitted by manual docking using program O