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Yorodumi- PDB-4v3p: The molecular structure of the left-handed supra-molecular helix ... -
+Open data
-Basic information
Entry | Database: PDB / ID: 4v3p | ||||||
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Title | The molecular structure of the left-handed supra-molecular helix of eukaryotic polyribosomes | ||||||
Components |
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Keywords | RIBOSOME | ||||||
Function / homology | Function and homology information cytoplasmic translational elongation / protein kinase activator activity / translational elongation / ribonucleoprotein complex binding / maturation of LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / heterotrimeric G-protein complex / signaling receptor complex adaptor activity / ribosome biogenesis / large ribosomal subunit rRNA binding / cytosolic small ribosomal subunit ...cytoplasmic translational elongation / protein kinase activator activity / translational elongation / ribonucleoprotein complex binding / maturation of LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / heterotrimeric G-protein complex / signaling receptor complex adaptor activity / ribosome biogenesis / large ribosomal subunit rRNA binding / cytosolic small ribosomal subunit / cytoplasmic translation / cytosolic large ribosomal subunit / negative regulation of translation / ribosome / structural constituent of ribosome / G protein-coupled receptor signaling pathway / ribonucleoprotein complex / translation / mRNA binding / RNA binding / zinc ion binding / nucleus / cytoplasm Similarity search - Function | ||||||
Biological species | Triticum aestivum (bread wheat) | ||||||
Method | ELECTRON MICROSCOPY / subtomogram averaging / cryo EM / Resolution: 34 Å | ||||||
Authors | Myasnikov, A.G. / Afonina, Z.A. / Menetret, J.F. / Shirokov, V.A. / Spirin, A.S. / Klaholz, B.P. | ||||||
Citation | Journal: Nat Commun / Year: 2014 Title: The molecular structure of the left-handed supra-molecular helix of eukaryotic polyribosomes. Authors: Alexander G Myasnikov / Zhanna A Afonina / Jean-François Ménétret / Vladimir A Shirokov / Alexander S Spirin / Bruno P Klaholz / Abstract: During protein synthesis, several ribosomes bind to a single messenger RNA (mRNA) forming large macromolecular assemblies called polyribosomes. Here we report the detailed molecular structure of a ...During protein synthesis, several ribosomes bind to a single messenger RNA (mRNA) forming large macromolecular assemblies called polyribosomes. Here we report the detailed molecular structure of a 100 MDa eukaryotic poly-ribosome complex derived from cryo electron tomography, sub-tomogram averaging and pseudo-atomic modelling by crystal structure fitting. The structure allowed the visualization of the three functional parts of the polysome assembly, the central core region that forms a rather compact left-handed supra-molecular helix, and the more open regions that harbour the initiation and termination sites at either ends. The helical region forms a continuous mRNA channel where the mRNA strand bridges neighbouring exit and entry sites of the ribosomes and prevents mRNA looping between ribosomes. This structure provides unprecedented insights into protein- and RNA-mediated inter-ribosome contacts that involve conserved sites through 40S subunits and long protruding RNA expansion segments, suggesting a role in stabilizing the overall polyribosomal assembly. | ||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | Molecule: MolmilJmol/JSmol |
-Downloads & links
-Download
PDBx/mmCIF format | 4v3p.cif.gz | 4.6 MB | Display | PDBx/mmCIF format |
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PDB format | pdb4v3p.ent.gz | Display | PDB format | |
PDBx/mmJSON format | 4v3p.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 4v3p_validation.pdf.gz | 1.5 MB | Display | wwPDB validaton report |
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Full document | 4v3p_full_validation.pdf.gz | 4.5 MB | Display | |
Data in XML | 4v3p_validation.xml.gz | 585.7 KB | Display | |
Data in CIF | 4v3p_validation.cif.gz | 912.1 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/v3/4v3p ftp://data.pdbj.org/pub/pdb/validation_reports/v3/4v3p | HTTPS FTP |
-Related structure data
Related structure data | 2790MC M: map data used to model this data C: citing same article (ref.) |
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Similar structure data |
-Links
-Assembly
Deposited unit |
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1 |
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-Components
-Protein , 5 types, 5 molecules SaSBLALMLh
#1: Protein | Mass: 41794.809 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Triticum aestivum (bread wheat) / References: UniProt: Q8LNY6 |
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#3: Protein | Mass: 23255.113 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Triticum aestivum (bread wheat) / References: UniProt: Q8L804 |
#36: Protein | Mass: 24604.240 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Triticum aestivum (bread wheat) / References: UniProt: Q5I7L3 |
#41: Protein | Mass: 15040.856 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Triticum aestivum (bread wheat) / References: UniProt: Q7X9K1, UniProt: Q5I7K4*PLUS |
#56: Protein | Mass: 15740.655 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Triticum aestivum (bread wheat) |
+40S ribosomal protein ... , 21 types, 21 molecules SASDSESFSISJSKSLSMSOSQSPSSSRSVSYSZSXSCSNST
-40S WHEAT GERM ... , 2 types, 2 molecules SWS3
#18: Protein | Mass: 7847.665 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Triticum aestivum (bread wheat) |
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#30: RNA chain | Mass: 3498.178 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Triticum aestivum (bread wheat) |
-Unknown 40S wheat germ ribosome protein ... , 4 types, 4 molecules ScSbSUSG
#21: Protein/peptide | Mass: 2145.636 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Triticum aestivum (bread wheat) |
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#22: Protein/peptide | Mass: 3081.790 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Triticum aestivum (bread wheat) |
#23: Protein | Mass: 11259.235 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Triticum aestivum (bread wheat) |
#26: Protein | Mass: 12188.016 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Triticum aestivum (bread wheat) |
-Ribosomal protein ... , 12 types, 13 molecules SHLELPLTLlLoLiLjLtLuLeLCLK
#27: Protein | Mass: 14825.377 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Triticum aestivum (bread wheat) | ||||||
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#38: Protein | Mass: 19717.926 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Triticum aestivum (bread wheat) / References: UniProt: Q5I7L2 | ||||||
#42: Protein | Mass: 23118.094 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Triticum aestivum (bread wheat) | ||||||
#46: Protein | Mass: 22478.781 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Triticum aestivum (bread wheat) / References: UniProt: Q7XY20 | ||||||
#57: Protein | Mass: 10823.657 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Triticum aestivum (bread wheat) | ||||||
#59: Protein | Mass: 6528.786 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Triticum aestivum (bread wheat) / References: UniProt: Q5I7K7 | ||||||
#70: Protein | Mass: 13808.402 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Triticum aestivum (bread wheat) / References: UniProt: Q5I7K8 | ||||||
#71: Protein | Mass: 11858.759 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Triticum aestivum (bread wheat) | ||||||
#75: Protein | Mass: 6155.269 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Triticum aestivum (bread wheat) / References: UniProt: Q5I7K5 #78: Protein | | Mass: 28175.119 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Triticum aestivum (bread wheat) / References: UniProt: Q5I7K6 #80: Protein | | Mass: 44720.387 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Triticum aestivum (bread wheat) / References: UniProt: Q7X744 #82: Protein | | Mass: 23581.172 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Triticum aestivum (bread wheat) / References: UniProt: Q5I7L1 |
-RNA chain , 5 types, 5 molecules S2S1L1L3L2
#31: RNA chain | Mass: 24135.262 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Triticum aestivum (bread wheat) |
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#32: RNA chain | Mass: 562064.875 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Triticum aestivum (bread wheat) |
#33: RNA chain | Mass: 1084820.375 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Triticum aestivum (bread wheat) |
#34: RNA chain | Mass: 38716.957 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Triticum aestivum (bread wheat) / References: GenBank: 21661 |
#35: RNA chain | Mass: 51270.461 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Triticum aestivum (bread wheat) / References: GenBank: 17016972 |
+60S ribosomal protein ... , 27 types, 27 molecules LBLFLHLOLRLQLULVLXLZLYLbLdLfLgLnLrLGLSLWLaLkLJLcLDLmLI
-Unknown 60S wheat germ ribosome protein ... , 5 types, 6 molecules LqLyLxLzLLLN
#61: Protein/peptide | Mass: 3445.437 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Triticum aestivum (bread wheat) | ||||||
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#62: Protein/peptide | Mass: 1720.111 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Triticum aestivum (bread wheat) #63: Protein/peptide | | Mass: 1209.482 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Triticum aestivum (bread wheat) #65: Protein | | Mass: 15507.085 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Triticum aestivum (bread wheat) #66: Protein | | Mass: 15418.365 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Triticum aestivum (bread wheat) |
-Protein/peptide , 1 types, 1 molecules Lp
#73: Protein/peptide | Mass: 4973.043 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Triticum aestivum (bread wheat) |
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-60S acidic ribosomal protein ... , 2 types, 3 molecules LvLwLs
#76: Protein | Mass: 6355.312 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Triticum aestivum (bread wheat) / References: UniProt: W5AP46 #79: Protein | | Mass: 28410.049 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Triticum aestivum (bread wheat) |
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-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: subtomogram averaging |
-Sample preparation
Component | Name: POLY-RIBOSOME FROM IN VITRO WHEAT GERM SYSTEM / Type: RIBOSOME |
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Buffer solution | Name: 25MM HEPES-KOH, 3MM MG(OAC)2, 85MM KOAC,1.6MM DTT, 0.25MM SPERMIDINE pH: 7.6 Details: 25MM HEPES-KOH, 3MM MG(OAC)2, 85MM KOAC,1.6MM DTT, 0.25MM SPERMIDINE |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Specimen support | Details: HOLEY CARBON |
Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE Details: VITRIFICATION 1 --CRYOGEN- ETHANE, HUMIDITY-95, TEMPERATURE- 120,INSTRUMENT- FEI VITROBOT MARK IV, METHOD- 3UL OF SAMPLE APPLIED ON 300 MESH HOLY CARBON QUANTIFOIL GRID. BLOTTING WAS DONE IN ...Details: VITRIFICATION 1 --CRYOGEN- ETHANE, HUMIDITY-95, TEMPERATURE- 120,INSTRUMENT- FEI VITROBOT MARK IV, METHOD- 3UL OF SAMPLE APPLIED ON 300 MESH HOLY CARBON QUANTIFOIL GRID. BLOTTING WAS DONE IN VITROBOT MARK IV, BLOT TIME 0.5 SEC, BLOT FORCE 5 |
-Electron microscopy imaging
Experimental equipment | Model: Tecnai F30 / Image courtesy: FEI Company |
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Microscopy | Model: FEI TECNAI F30 / Date: Jan 1, 2013 |
Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 150 kV / Illumination mode: FLOOD BEAM |
Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 39000 X / Calibrated magnification: 41176 X / Nominal defocus max: 4000 nm / Nominal defocus min: 2000 nm / Cs: 2 mm |
Specimen holder | Temperature: 90 K / Tilt angle max: 70 ° / Tilt angle min: -70 ° |
Image recording | Electron dose: 30 e/Å2 / Film or detector model: FEI FALCON I (4k x 4k) |
-Processing
EM software |
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3D reconstruction | Method: MAXIMUM LIKELIHOOD / Resolution: 34 Å / Num. of particles: 106 / Actual pixel size: 6.8 Å / Details: SUBMISSION BASED ON EXPERIMENTAL DATA / Symmetry type: HELICAL | |||||||||||||||
Atomic model building | Protocol: RIGID BODY FIT / Space: REAL / Details: METHOD--RIGID BODY REFINEMENT PROTOCOL--X-RAY | |||||||||||||||
Atomic model building | PDB-ID: 3IZ6 3iz6 | |||||||||||||||
Refinement | Highest resolution: 34 Å |