2026-09-30 REL RCSB INITIAL_RELEASE REPOSITORY RCSB RCSB 2025-09-25 2026-09-30 2026-09-30 2026-09-30 National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS) 1R41 GM148117 United States National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS) R41 GM153173 United States National Science Foundation (NSF, United States) DBI-1828765 United States National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS) P30 GM140963 United States National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID) R21 AI154171 United States Pseudomonas aeruginosa 50S ribosome (base map) Findlay JL Kanik M Gauvin CC Franklin MJ Lawrence CM 50S Ribosome, ribosome silencing factor during starvation, RsfS, Pseudomonas aeruginosa, Ribosome Findlay JL Kanik M Franklin MJ Lawrence CM RsfS Prevents 70S Formation During Active Cell Growth in P. aeruginosa To Be Published 0353 EMD-73091 other EM volume
Pseudomonas aeruginosa 50S ribosome (L1 stalk in 'mid' conformation)
 EMD-73298 other EM volume
Pseudomonas aeruginosa 50S ribosome (L1 stalk 'in' conformation
 EMD-73300 other EM volume
Pseudomonas aeruginosa 50S ribosome (L1 stalk in 'out' conformation)
 EMD-73301 other EM volume
Pseudomonas aeruginosa 50S ribosome (L1 stalk in 'out' conformation and missing uL1 and tRNA)
 EMDB EMD-72874 associated EM volume EMDB EMD-73091 other EM volume
Pseudomonas aeruginosa 50S ribosome (L1 stalk in 'mid' conformation)
 EMDB EMD-73298 other EM volume
Pseudomonas aeruginosa 50S ribosome (L1 stalk 'in' conformation
 EMDB EMD-73300 other EM volume
Pseudomonas aeruginosa 50S ribosome (L1 stalk in 'out' conformation)
 EMDB EMD-73301 other EM volume
Pseudomonas aeruginosa 50S ribosome (L1 stalk in 'out' conformation and missing uL1 and tRNA)
 PDB 9YLQ unspecified
Pseudomonas aeruginosa 50S ribosome (L1 stalk in 'mid' conformation)
 PDB 9YLH unspecified
Pseudomonas aeruginosa 50S ribosome (L1 stalk 'in' conformation
 PDB 9YLK unspecified
Pseudomonas aeruginosa 50S ribosome (L1 stalk in 'out' conformation)
 PDB 9YLP unspecified
Pseudomonas aeruginosa 50S ribosome (L1 stalk in 'out' conformation and missing uL1 and tRNA)
 Ribosome fraction isolated from wild type P. aeruginosa cells during exponential phase growth Ribosome fraction isolated from wild type P. aeruginosa cells during exponential phase growth 0 Pseudomonas aeruginosa PAO1 1.47 singleParticle particle 2.3 7.5 20.0 C4H12ClNO3 Tris-HCL 300.0 NH4Cl Ammonium Chloride 10.5 Mg(CH3COO)2 Manesium acetate 0.5 C10H16N2O8 EDTA 3.0 C2H6OS beta-mercaptoethanol Quantifoil R1.2/1.3 COPPER 300 CARBON HOLEY ARRAY 12.0 GLOW DISCHARGE AIR 39.0 ETHANE 90 277 FEI VITROBOT MARK IV
Blot time: 5 seconds Blot force: 3.
FEI TALOS ARCTICA FLOOD BEAM BRIGHT FIELD FIELD EMISSION GUN 200 50.0 2.7 0.5 2.5 36000.0 FEI TITAN KRIOS AUTOGRID HOLDER NITROGEN GATAN K3 (6k x 4k) 5760 4092 2 13721 5.0 54.3
50 frames per movie at 0.1 seconds per frame
 1 1665000 cryoSPARC v4.7.1 PHASE FLIPPING AND AMPLITUDE CORRECTION
Multi class ab initio was used to generate three initial models for each major ribosome assembly state.
 1 EXACT BACK PROJECTION 2.25 FSC 0.143 CUT-OFF cryoSPARC v4.7.1 642285 COMMON LINE cryoSPARC v4.7.1 PROJECTION MATCHING cryoSPARC v4.7.1 2 550000.0 cryoSPARC v4.7.1
The two final classes for the base map were plus and minus RsfS. Further classification of the L1 stalk region followed by local refinement resulted in another four classes for each of the two base map classes.
 emd_72874.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 696 696 696 0 0 0 696 696 696 468.408 468.408 468.408 90.0 90.0 90.0 Z Y X -26.717741 48.627079999999999 -0.0040610703 0.94298387 0.673 0.673 0.673 3.5 AUTHOR 7UNW PDB experimental model RIGID BODY FIT
Initially, each chain of the 7UNW 50S subunit was rigid body fit into the experimental map. Occasionally Alpha fold 2 generated models of individual chains were used instead. Models were then refined in phenix.
REAL emd_72874_msk_1.map emd_72874_half_map_2.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 696 696 696 0 0 0 696 696 696 468.408 468.408 468.408 90.0 90.0 90.0 X Y Z -0.31512314 0.3456768 0.00007849215 0.031911828 0.673 0.673 0.673 AUTHOR emd_72874_half_map_1.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 696 696 696 0 0 0 696 696 696 468.408 468.408 468.408 90.0 90.0 90.0 X Y Z -0.35914165 0.36391214 0.000078304736 0.03172928 0.673 0.673 0.673 AUTHOR