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Open data
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Basic information
| Entry | Database: PDB / ID: 9sl5 | |||||||||
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| Title | Model of M. pneumoniae 70S eT-TC (stable) | |||||||||
Components |
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Keywords | TRANSLATION / 70S / ribosome / RNAP | |||||||||
| Function / homology | Function and homology informationDNA-templated transcription termination / DNA-templated transcription elongation / regulation of DNA-templated transcription elongation / transcription antitermination / ribonucleoside binding / DNA-directed RNA polymerase / DNA-directed RNA polymerase activity / transferase activity / large ribosomal subunit / ribosomal small subunit assembly ...DNA-templated transcription termination / DNA-templated transcription elongation / regulation of DNA-templated transcription elongation / transcription antitermination / ribonucleoside binding / DNA-directed RNA polymerase / DNA-directed RNA polymerase activity / transferase activity / large ribosomal subunit / ribosomal small subunit assembly / ribosomal small subunit biogenesis / small ribosomal subunit rRNA binding / 5S rRNA binding / ribosomal large subunit assembly / small ribosomal subunit / cytosolic small ribosomal subunit / large ribosomal subunit rRNA binding / tRNA binding / cytosolic large ribosomal subunit / cytoplasmic translation / protein dimerization activity / response to antibiotic / rRNA binding / negative regulation of translation / ribonucleoprotein complex / structural constituent of ribosome / ribosome / translation / DNA-binding transcription factor activity / mRNA binding / regulation of DNA-templated transcription / magnesium ion binding / DNA-templated transcription / DNA binding / RNA binding / zinc ion binding / cytosol / cytoplasm Similarity search - Function | |||||||||
| Biological species | Mycoplasmoides pneumoniae M129 (bacteria) | |||||||||
| Method | ELECTRON MICROSCOPY / subtomogram averaging / cryo EM / Resolution: 6.5 Å | |||||||||
Authors | Dobbs, J.M. / Mahamid, J. | |||||||||
| Funding support | United States, Denmark, 2items
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Citation | Journal: Cell / Year: 2026Title: Single-cell visual proteomics of a minimal bacterium reveals structural coordination of gene expression machineries. Authors: Joseph M Dobbs / Rasmus K Jensen / Julia Mahamid / ![]() Abstract: Translation is a central process in gene expression. Its regulation is complex, depends on factors that include cell state and the subcellular environment, and is subject to modulation via crosstalk ...Translation is a central process in gene expression. Its regulation is complex, depends on factors that include cell state and the subcellular environment, and is subject to modulation via crosstalk to processes such as transcription or translocation. Here, we used cryo-electron tomography of native and antibiotic-perturbed Mycoplasma pneumoniae cells to resolve 140 maps that recapitulate bacterial translation during the initiation, elongation, and recycling phases. We visualized multiple transcription-translation complexes, allowing us to propose a threading-based translation reinitiation mechanism and to provide structural evidence for a long-hypothesized supercomplex that coordinates transcription, translation, and membrane attachment. We resolved abundant membrane-associated large ribosomal subunits and suggest that dissociation from membranes depends on the conditional initiation of new translation, consistent with a potentially conserved mechanism in mammalian cells. This work visualizes the multilayered control of bacterial translation and demonstrates the power of in-cell structural biology to investigate regulatory circuits in gene expression. | |||||||||
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Structure visualization
| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 9sl5.cif.gz | 3.9 MB | Display | PDBx/mmCIF format |
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| PDB format | pdb9sl5.ent.gz | Display | PDB format | |
| PDBx/mmJSON format | 9sl5.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/sl/9sl5 ftp://data.pdbj.org/pub/pdb/validation_reports/sl/9sl5 | HTTPS FTP |
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-Related structure data
| Related structure data | ![]() 53671MC ![]() 9sk2C ![]() 9sk4C ![]() 9sk5C ![]() 9sk6C ![]() 9sk7C ![]() 9sk8C ![]() 9sk9C ![]() 9skaC ![]() 9skbC ![]() 9skcC ![]() 9skdC ![]() 9skeC ![]() 9skfC ![]() 9sl4C ![]() 9sl6C ![]() 9sl7C M: map data used to model this data C: citing same article ( |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Links
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Assembly
| Deposited unit | ![]()
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Components
+Large ribosomal subunit protein ... , 25 types, 28 molecules 0VWXYabcdefhiklmnopqrsuvwxyz
-50S ribosomal protein ... , 5 types, 5 molecules 12Ujt
| #2: Protein | Mass: 6793.135 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Mycoplasmoides pneumoniae M129 (bacteria) / References: UniProt: P75447 |
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| #3: Protein/peptide | Mass: 4400.488 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Mycoplasmoides pneumoniae M129 (bacteria) / References: UniProt: P52864 |
| #35: Protein | Mass: 17645.719 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Mycoplasmoides pneumoniae M129 (bacteria) / References: UniProt: P75240 |
| #46: Protein | Mass: 13478.906 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Mycoplasmoides pneumoniae M129 (bacteria) / References: UniProt: Q50308 |
| #56: Protein | Mass: 12461.865 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Mycoplasmoides pneumoniae M129 (bacteria) / References: UniProt: Q50307 |
-RNA chain , 4 types, 4 molecules 3457
| #4: RNA chain | Mass: 931587.500 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Mycoplasmoides pneumoniae M129 (bacteria) |
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| #5: RNA chain | Mass: 33878.168 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Mycoplasmoides pneumoniae M129 (bacteria) |
| #6: RNA chain | Mass: 482711.719 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Mycoplasmoides pneumoniae M129 (bacteria) |
| #8: RNA chain | Mass: 24470.521 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Mycoplasmoides pneumoniae M129 (bacteria) / References: GenBank: 3042778399 |
-DNA-directed RNA polymerase subunit ... , 3 types, 4 molecules 6AB9Z
| #7: Protein | Mass: 36709.496 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Mycoplasmoides pneumoniae M129 (bacteria) / References: UniProt: Q50295, DNA-directed RNA polymerase#9: Protein | | Mass: 155819.000 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Mycoplasmoides pneumoniae M129 (bacteria) / References: UniProt: P78013, DNA-directed RNA polymerase#37: Protein | | Mass: 143333.938 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Mycoplasmoides pneumoniae M129 (bacteria) / References: UniProt: P75271, DNA-directed RNA polymerase |
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-Small ribosomal subunit protein ... , 20 types, 20 molecules ABCDEFGHIJKLMNOPQRST
| #10: Protein | Mass: 27362.705 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Mycoplasmoides pneumoniae M129 (bacteria) / References: UniProt: P75560 |
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| #16: Protein | Mass: 24162.953 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Mycoplasmoides pneumoniae M129 (bacteria) / References: UniProt: P41205 |
| #17: Protein | Mass: 23589.334 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Mycoplasmoides pneumoniae M129 (bacteria) / References: UniProt: P46775 |
| #18: Protein | Mass: 16715.732 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Mycoplasmoides pneumoniae M129 (bacteria) / References: UniProt: Q50301 |
| #19: Protein | Mass: 19352.865 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Mycoplasmoides pneumoniae M129 (bacteria) / References: UniProt: P75543 |
| #20: Protein | Mass: 17765.828 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Mycoplasmoides pneumoniae M129 (bacteria) / References: UniProt: P75545 |
| #21: Protein | Mass: 15771.888 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Mycoplasmoides pneumoniae M129 (bacteria) / References: UniProt: Q50304 |
| #22: Protein | Mass: 14603.050 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Mycoplasmoides pneumoniae M129 (bacteria) / References: UniProt: P75179 |
| #23: Protein | Mass: 11524.757 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Mycoplasmoides pneumoniae M129 (bacteria) / References: UniProt: P75581 |
| #24: Protein | Mass: 11877.700 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Mycoplasmoides pneumoniae M129 (bacteria) / References: UniProt: Q50296 |
| #25: Protein | Mass: 15319.126 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Mycoplasmoides pneumoniae M129 (bacteria) / References: UniProt: P75546 |
| #26: Protein | Mass: 13520.724 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Mycoplasmoides pneumoniae M129 (bacteria) / References: UniProt: Q50297 |
| #27: Protein | Mass: 6770.168 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Mycoplasmoides pneumoniae M129 (bacteria) / References: UniProt: Q50305 |
| #28: Protein | Mass: 9576.245 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Mycoplasmoides pneumoniae M129 (bacteria) / References: UniProt: P75173 |
| #29: Protein | Mass: 9190.768 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Mycoplasmoides pneumoniae M129 (bacteria) / References: UniProt: P75131 |
| #30: Protein | Mass: 9599.267 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Mycoplasmoides pneumoniae M129 (bacteria) / References: UniProt: Q50309 |
| #31: Protein | Mass: 7631.100 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Mycoplasmoides pneumoniae M129 (bacteria) / References: UniProt: P75541 |
| #32: Protein | Mass: 9682.159 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Mycoplasmoides pneumoniae M129 (bacteria) / References: UniProt: P75576 |
| #33: Protein | Mass: 8977.407 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Mycoplasmoides pneumoniae M129 (bacteria) / References: UniProt: P75237 |
| #34: Protein | Mass: 6724.104 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Mycoplasmoides pneumoniae M129 (bacteria) / References: UniProt: P57079 |
-Protein , 1 types, 1 molecules AA
| #11: Protein | Mass: 10891.354 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Mycoplasmoides pneumoniae M129 (bacteria) / References: UniProt: P75090 |
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-Transcription termination/antitermination protein ... , 2 types, 2 molecules ACAF
| #12: Protein | Mass: 41063.934 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Mycoplasmoides pneumoniae M129 (bacteria) / References: UniProt: P75591 |
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| #15: Protein | Mass: 18151.113 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Mycoplasmoides pneumoniae M129 (bacteria) / References: UniProt: P75049 |
-DNA chain , 2 types, 2 molecules ADAE
| #13: DNA chain | Mass: 9927.437 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Mycoplasmoides pneumoniae M129 (bacteria) |
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| #14: DNA chain | Mass: 9749.313 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Mycoplasmoides pneumoniae M129 (bacteria) |
-Details
| Has protein modification | Y |
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-Experimental details
-Experiment
| Experiment | Method: ELECTRON MICROSCOPY |
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| EM experiment | Aggregation state: CELL / 3D reconstruction method: subtomogram averaging |
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Sample preparation
| Component | Name: Mycoplasma cell / Type: CELL / Entity ID: all / Source: NATURAL |
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| Source (natural) | Organism: Mycoplasmoides pneumoniae M129 (bacteria) |
| Buffer solution | pH: 7 |
| Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
| Vitrification | Cryogen name: ETHANE-PROPANE |
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Electron microscopy imaging
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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| Microscopy | Model: TFS KRIOS |
| Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
| Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 5000 nm / Nominal defocus min: 2500 nm |
| Image recording | Electron dose: 3.2 e/Å2 / Avg electron dose per subtomogram: 120 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) |
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Processing
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| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | |||||||||
| Symmetry | Point symmetry: C1 (asymmetric) | |||||||||
| 3D reconstruction | Resolution: 6.5 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 3261 / Symmetry type: POINT | |||||||||
| EM volume selection | Num. of tomograms: 254 / Num. of volumes extracted: 323168 | |||||||||
| Atomic model building | Protocol: RIGID BODY FIT / Details: Rigid body fit in ChimeraX |
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About Yorodumi




Mycoplasmoides pneumoniae M129 (bacteria)
United States,
Denmark, 2items
Citation



























































































































































PDBj


































































FIELD EMISSION GUN