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- PDB-7qgn: Structure of the SmrB-bound E. coli disome - stalled 70S ribosome -
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Open data
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Basic information
Entry | Database: PDB / ID: 7qgn | ||||||
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Title | Structure of the SmrB-bound E. coli disome - stalled 70S ribosome | ||||||
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![]() | RIBOSOME / Ribosome rescue / disome / ribosome collision / stalling / no-go complex / nuclease / SmrB | ||||||
Function / homology | ![]() stringent response / transcriptional attenuation / endoribonuclease inhibitor activity / RNA-binding transcription regulator activity / translational termination / negative regulation of cytoplasmic translation / DnaA-L2 complex / translation repressor activity / negative regulation of DNA-templated DNA replication initiation / mRNA regulatory element binding translation repressor activity ...stringent response / transcriptional attenuation / endoribonuclease inhibitor activity / RNA-binding transcription regulator activity / translational termination / negative regulation of cytoplasmic translation / DnaA-L2 complex / translation repressor activity / negative regulation of DNA-templated DNA replication initiation / mRNA regulatory element binding translation repressor activity / assembly of large subunit precursor of preribosome / ribosome assembly / cytosolic ribosome assembly / response to reactive oxygen species / DNA-templated transcription termination / response to radiation / mRNA 5'-UTR binding / regulation of translation / large ribosomal subunit / transferase activity / ribosomal small subunit assembly / ribosomal small subunit biogenesis / small ribosomal subunit / small ribosomal subunit rRNA binding / 5S rRNA binding / ribosomal large subunit assembly / cytosolic small ribosomal subunit / large ribosomal subunit rRNA binding / endonuclease activity / cytosolic large ribosomal subunit / cytoplasmic translation / Hydrolases; Acting on ester bonds / tRNA binding / negative regulation of translation / rRNA binding / ribosome / structural constituent of ribosome / translation / ribonucleoprotein complex / response to antibiotic / negative regulation of DNA-templated transcription / mRNA binding / DNA binding / RNA binding / zinc ion binding / metal ion binding / cytosol / cytoplasm Similarity search - Function | ||||||
Biological species | ![]() ![]() ![]() ![]() ![]() ![]() ![]() | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.37 Å | ||||||
![]() | Kratzat, H. / Buschauer, R. / Berninghausen, O. / Beckmann, R. | ||||||
Funding support | ![]()
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![]() | ![]() Title: Ribosome collisions induce mRNA cleavage and ribosome rescue in bacteria. Authors: Kazuki Saito / Hanna Kratzat / Annabelle Campbell / Robert Buschauer / A Maxwell Burroughs / Otto Berninghausen / L Aravind / Rachel Green / Roland Beckmann / Allen R Buskirk / ![]() ![]() Abstract: Ribosome rescue pathways recycle stalled ribosomes and target problematic mRNAs and aborted proteins for degradation. In bacteria, it remains unclear how rescue pathways distinguish ribosomes stalled ...Ribosome rescue pathways recycle stalled ribosomes and target problematic mRNAs and aborted proteins for degradation. In bacteria, it remains unclear how rescue pathways distinguish ribosomes stalled in the middle of a transcript from actively translating ribosomes. Here, using a genetic screen in Escherichia coli, we discovered a new rescue factor that has endonuclease activity. SmrB cleaves mRNAs upstream of stalled ribosomes, allowing the ribosome rescue factor tmRNA (which acts on truncated mRNAs) to rescue upstream ribosomes. SmrB is recruited to ribosomes and is activated by collisions. Cryo-electron microscopy structures of collided disomes from E. coli and Bacillus subtilis show distinct and conserved arrangements of individual ribosomes and the composite SmrB-binding site. These findings reveal the underlying mechanisms by which ribosome collisions trigger ribosome rescue in bacteria. | ||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 3.7 MB | Display | ![]() |
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PDB format | ![]() | Display | ![]() | |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
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-Validation report
Summary document | ![]() | 1.4 MB | Display | ![]() |
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Full document | ![]() | 1.6 MB | Display | |
Data in XML | ![]() | 222.6 KB | Display | |
Data in CIF | ![]() | 384.5 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 13956MC ![]() 7qg8C ![]() 7qghC ![]() 7qgrC ![]() 7qguC ![]() 7qh4C C: citing same article ( M: map data used to model this data |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
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Assembly
Deposited unit | ![]()
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Components
-RNA chain , 5 types, 5 molecules AMON0
#1: RNA chain | Mass: 23545.971 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
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#4: RNA chain | Mass: 24060.287 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#5: RNA chain | Mass: 38790.090 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#35: RNA chain | Mass: 941306.188 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#38: RNA chain | Mass: 498725.406 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
-Protein , 2 types, 2 molecules Bs
#2: Protein | Mass: 20938.285 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() Gene: yfcN, mutS2, smrB, smrB_1, smrB_2, A5U30_004390, A8499_001840, A9819_13690, A9X72_07680, ABE90_016875, ACN68_23030, ACN81_17810, ACU57_26745, AT845_000599, AWP93_07555, BANRA_00899, BANRA_ ...Gene: yfcN, mutS2, smrB, smrB_1, smrB_2, A5U30_004390, A8499_001840, A9819_13690, A9X72_07680, ABE90_016875, ACN68_23030, ACN81_17810, ACU57_26745, AT845_000599, AWP93_07555, BANRA_00899, BANRA_03120, BANRA_03372, BF481_001004, BG944_000572, BGZ_01188, BGZ_03662, BHS81_14420, BIZ41_10480, BJI68_12470, BK292_05530, BMT49_14945, BN17_16361, BO068_000573, BOB65_001429, BOH76_07895, BON63_04725, BON64_17650, BON65_13895, BON66_23670, BON67_14425, BON68_20955, BON70_19955, BON72_07945, BON73_17545, BON74_06335, BON75_03320, BON76_16635, BON77_02335, BON78_04290, BON79_05115, BON80_19510, BON84_07205, BON88_15485, BON89_17570, BON90_11325, BON93_24455, BON94_16970, BON95_09375, BON97_08585, BON98_08660, BR158_002903, BSR05_08700, BTQ06_04170, BvCmsF30A_00313, BvCmsHHP019_01505, BvCmsHHP019_04741, BvCmsHHP056_04467, BvCmsKKP061_01272, BvCmsKSNP073_04721, BvCmsNSP072_04545, BVL39_15455, C2121_000219, C2U48_22750, C5N07_03940, C5Y87_03970, C9114_16420, C9160_05935, CCS08_07685, CCV12_002627, CDC27_12170, CG692_16040, CG831_000106, CIG67_19185, CQB02_04630, CR538_08010, CT143_04915, CV83915_03834, CWS33_01470, D3G36_02825, D9D77_18555, D9H94_01080, D9J61_20205, DAH18_01290, DAH19_01275, DAH20_01625, DAH22_02175, DAH27_09560, DAH28_11500, DAH29_05910, DAH30_16955, DAH31_06915, DAH32_12865, DAH34_11100, DAH35_01300, DAH36_15590, DAH37_19730, DAH41_07365, DAH50_05250, DEN88_00035, DEN89_08320, DEN90_05265, DEN91_02555, DEN92_02065, DEN93_02685, DEN94_01290, DEN95_01315, DEN96_01750, DEN97_01415, DEN98_01420, DEN99_05995, DEO00_00270, DEO01_17030, DEO02_01830, DEO03_03920, DEO04_00005, DEO05_00005, DEO06_08185, DEO07_00005, DEO08_00005, DEO09_00005, DEO10_00005, DEO11_00005, DEO12_00005, DEO13_01820, DEO14_01755, DEO15_01085, DEO17_01750, DEO18_04800, DEO19_01300, DEO20_01795, DIV22_21330, DN627_21615, DNQ45_19055, DRW19_09740, DS732_17835, DTL90_12855, DTM16_09590, DXT69_04490, DXT70_01870, DXT71_03185, E2112_03655, E2113_09810, E2117_01065, E2119_16395, E2121_01160, E2134_04330, E3N34_02270, E5P23_02715, E5P24_14725, E5P25_01670, E5P30_14800, E5P31_09445, E5P32_05070, E5P33_05410, E5P35_06605, E5P36_01995, E5P37_00385, E5P39_08050, E5P40_09805, E5P41_10890, E5P42_00250, E5P43_12380, E5P44_13535, E5P45_12690, E5P46_02815, E5P47_11675, E5P48_09480, E5P49_00460, E5P50_14395, E5P51_21390, E5S35_19735, E5S36_02955, E5S38_02620, E5S39_01460, E5S42_01695, E5S43_19350, E5S44_00375, E5S45_16565, E5S47_01205, E5S48_14270, E5S51_02300, E5S52_02190, E5S53_18875, E5S55_19065, E5S56_02640, E5S57_06985, EA239_07420, EA435_01595, EAN77_01305, EAX79_20205, EC1094V2_1345, EC3234A_175c01110, EC95NR1_01492, ED648_12345, EHD79_00295, EHH55_04655, EI021_18035, EIZ93_06290, EKI52_23470, ELT16_18350, ELT20_15195, ELT24_01425, ELT26_03990, ELT30_01440, ELT32_01920, ELT34_02590, ELT35_07845, ELT36_06875, ELT39_20410, ELT40_03580, ELT44_07815, ELT45_01435, ELT46_01450, ELT48_05880, ELT54_16840, ELT55_13610, ELT59_03260, ELT60_09215, ELT61_19220, ELT63_16105, ELT72_01435, ELU07_15110, ELU82_03765, ELU88_16655, ELU89_04385, ELU91_15800, ELU94_18550, ELU96_02215, ELU97_18185, ELU98_09905, ELV00_03615, ELV01_12085, ELV03_05730, ELV04_06410, ELV05_03280, ELV07_11430, ELV11_03535, ELV12_11720, ELV13_16905, ELV22_00040, ELV23_22840, ELV24_07090, ELV29_06140, ELX56_00135, ELX68_00090, ELX70_01865, ELX79_14975, ELX83_13520, ELX85_05845, ELY02_00645, ELY05_05535, ELY23_09510, ELY24_08500, ELY31_00705, ELY50_09115, ERS085406_02073, ERS139208_00454, EYV17_01290, EYV18_11375, F0L67_02300, F2N31_09430, F7F11_19875, F9V24_13620, F9X20_21990, FDM60_03010, FE587_23440, FEJ01_05060, FEL34_15690, FOI11_001300, FOI11_18750, FQ007_23030, FQF29_20000, FTV90_21245, FV293_07005, G3565_01615, G9448_22280, GF699_03390, GFY34_16620, GIB53_14855, GKF86_02695, GKF89_15515, GKG12_06190, GNZ05_23665, GP650_07760, GP662_01570, GP711_04770, GP946_05950, GQA06_05730, GQE64_02945, GQM09_01760, GQM13_01410, GQW07_19785, GRC73_01145, GRO95_21555, GRW57_06930, GRW81_01820, GUB92_01975, GUI33_05790, H0O53_19725, H0O72_00040, H6Y26_004289, HI055_002425, HIE29_002473, HIN64_001808, HKA49_003965, HLZ50_13880, HmCms169_00759, HMU06_04960, HMV41_01130, HV109_07165, HV146_16035, HV209_11120, HVV39_03830, HVX32_14355, HVY77_08085, HVZ29_14235, HX136_07310, I6H02_06990, IAI11_22020, IFB95_000286, IH772_06500, J0541_000123, J5U05_001006, JE86ST02C_27550, JE86ST05C_28400, JFD_00470, JNP96_19200, NCTC10089_01526, NCTC10767_02776, NCTC10865_01974, NCTC11181_03768, NCTC13148_02067, NCTC13216_05049, NCTC7928_01110, NCTC8008_00929, NCTC8009_02822, NCTC8179_04654, NCTC8333_01761, NCTC8450_03992, NCTC8621_01639, NCTC8622_03767, NCTC8960_04324, NCTC9001_01891, NCTC9036_01593, NCTC9045_01822, NCTC9073_04248, NCTC9111_01754, NCTC9775_05405, ND22_002524, PGD_00891, RG28_10175, SAMEA3472044_01606, SAMEA3472056_00624, SAMEA3472067_00013, SAMEA3472080_03598, SAMEA3751407_01308, SAMEA3752557_00674, WR15_08435 Production host: ![]() ![]() |
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#3: Protein | Mass: 20531.092 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
+50S ribosomal protein ... , 30 types, 30 molecules PQRSTUVWXYZbcdefghijklmnopqrLC
-Ribosomal protein ... , 2 types, 2 molecules a6
#17: Protein | Mass: 14335.620 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
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#44: Protein | Mass: 17618.398 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
-30S ribosomal protein ... , 19 types, 19 molecules 12345789DEFGHIJKtuv
#39: Protein | Mass: 26581.479 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
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#40: Protein | Mass: 24293.199 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#41: Protein | Mass: 23514.199 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#42: Protein | Mass: 17120.785 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#43: Protein | Mass: 15201.021 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#45: Protein | Mass: 14146.557 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#46: Protein | Mass: 14872.244 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#47: Protein | Mass: 11755.597 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#48: Protein | Mass: 13844.938 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#49: Protein | Mass: 13768.157 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#50: Protein | Mass: 13096.402 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#51: Protein | Mass: 11562.550 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#52: Protein | Mass: 10290.816 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#53: Protein | Mass: 9207.572 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#54: Protein | Mass: 9694.465 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#55: Protein | Mass: 9006.500 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#56: Protein | Mass: 10586.505 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#57: Protein | Mass: 9690.425 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#58: Protein | Mass: 10257.935 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
-Non-polymers , 3 types, 12 molecules 




#59: Chemical | #60: Chemical | ChemComp-K / | #61: Water | ChemComp-HOH / | |
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-Details
Has ligand of interest | N |
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Has protein modification | Y |
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
Component | Name: stalled/leading ribosome of the SmrB-bound disome structure Type: RIBOSOME / Entity ID: #1-#58 / Source: NATURAL |
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Molecular weight | Experimental value: NO |
Source (natural) | Organism: ![]() ![]() |
Buffer solution | pH: 7.5 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Vitrification | Cryogen name: ETHANE |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 3500 nm / Nominal defocus min: 500 nm |
Image recording | Electron dose: 42.4 e/Å2 / Film or detector model: FEI FALCON III (4k x 4k) |
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Processing
CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION |
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3D reconstruction | Resolution: 3.37 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 32412 / Symmetry type: POINT |