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Open data
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Basic information
| Entry | ![]() | |||||||||
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| Title | E. coli 70S ribosome bound to Minocycline | |||||||||
Map data | E. coli 70S ribosome bound to Minocycline | |||||||||
Sample |
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Keywords | Tetracycline / bacterial ribosome / protein translation / Minocycline / Antibiotic / RIBOSOME | |||||||||
| Function / homology | Function and homology informationnegative regulation of cytoplasmic translational initiation / transcriptional attenuation / endoribonuclease inhibitor activity / positive regulation of ribosome biogenesis / RNA-binding transcription regulator activity / negative regulation of cytoplasmic translation / DnaA-L2 complex / translation repressor activity / negative regulation of translational initiation / negative regulation of DNA-templated DNA replication initiation ...negative regulation of cytoplasmic translational initiation / transcriptional attenuation / endoribonuclease inhibitor activity / positive regulation of ribosome biogenesis / RNA-binding transcription regulator activity / negative regulation of cytoplasmic translation / DnaA-L2 complex / translation repressor activity / negative regulation of translational initiation / negative regulation of DNA-templated DNA replication initiation / mRNA regulatory element binding translation repressor activity / cytosolic ribosome assembly / ribosome assembly / assembly of large subunit precursor of preribosome / transcription antitermination / translational initiation / regulation of cell growth / DNA-templated transcription termination / response to radiation / maintenance of translational fidelity / mRNA 5'-UTR binding / large ribosomal subunit / transferase activity / ribosomal small subunit assembly / ribosome binding / ribosomal small subunit biogenesis / 5S rRNA binding / ribosomal large subunit assembly / small ribosomal subunit / small ribosomal subunit rRNA binding / cytosolic small ribosomal subunit / large ribosomal subunit rRNA binding / cytosolic large ribosomal subunit / cytoplasmic translation / tRNA binding / negative regulation of translation / rRNA binding / structural constituent of ribosome / ribosome / translation / ribonucleoprotein complex / response to antibiotic / negative regulation of DNA-templated transcription / mRNA binding / DNA binding / RNA binding / zinc ion binding / membrane / cytoplasm / cytosol Similarity search - Function | |||||||||
| Biological species | ![]() | |||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 2.2 Å | |||||||||
Authors | Devarkar SC / Lomakin IB / Bunick CG | |||||||||
| Funding support | United States, 1 items
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Citation | Journal: Nat Commun / Year: 2026Title: Dual site targeting of the bacterial 70S ribosome by tetracyclines. Authors: Swapnil C Devarkar / Ivan B Lomakin / Jimin Wang / Ayman Grada / Christopher G Bunick / ![]() Abstract: The tetracycline class of antibiotics is widely used for treating bacterial diseases including Lyme disease, anthrax, acne vulgaris, and pneumonia. Using a series of high-resolution cryo-electron ...The tetracycline class of antibiotics is widely used for treating bacterial diseases including Lyme disease, anthrax, acne vulgaris, and pneumonia. Using a series of high-resolution cryo-electron microscopy (cryo-EM) structures, we show that tetracyclines can simultaneously target the mRNA decoding center in the 30S subunit and the nascent peptide exit tunnel (NPET) in the 50S subunit of the bacterial ribosome. Among the tested tetracyclines, Doxycycline was distinct in its ability to dimerize and bind the NPET at multiple locations. Structural comparison of Doxycycline, Minocycline, and Sarecycline bound to the Escherichia coli and Cutibacterium acnes 70S ribosome revealed species-specific differences affecting drug interaction and occupancy. Our results reveal a dual site mechanism of action for tetracyclines and provide a structural basis for rational design of narrow spectrum tetracyclines to overcome the rising threat of antibiotic resistance. | |||||||||
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Structure visualization
| Supplemental images |
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Downloads & links
-EMDB archive
| Map data | emd_71669.map.gz | 164.4 MB | EMDB map data format | |
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| Header (meta data) | emd-71669-v30.xml emd-71669.xml | 73.3 KB 73.3 KB | Display Display | EMDB header |
| FSC (resolution estimation) | emd_71669_fsc.xml | 14.4 KB | Display | FSC data file |
| Images | emd_71669.png | 112.9 KB | ||
| Masks | emd_71669_msk_1.map | 325 MB | Mask map | |
| Filedesc metadata | emd-71669.cif.gz | 14.6 KB | ||
| Others | emd_71669_half_map_1.map.gz emd_71669_half_map_2.map.gz | 301.9 MB 301.8 MB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-71669 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-71669 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 9pijMC ![]() 9pihC ![]() 9piiC ![]() 9pj7C ![]() 9pj8C ![]() 9pj9C M: atomic model generated by this map C: citing same article ( |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Links
| EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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| Related items in Molecule of the Month |
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Map
| File | Download / File: emd_71669.map.gz / Format: CCP4 / Size: 325 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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| Annotation | E. coli 70S ribosome bound to Minocycline | ||||||||||||||||||||||||||||||||||||
| Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
| Voxel size | X=Y=Z: 1.07 Å | ||||||||||||||||||||||||||||||||||||
| Density |
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| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
| Details | EMDB XML:
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-Supplemental data
-Mask #1
| File | emd_71669_msk_1.map | ||||||||||||
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| Density Histograms |
-Half map: Half-map A
| File | emd_71669_half_map_1.map | ||||||||||||
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| Annotation | Half-map A | ||||||||||||
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| Density Histograms |
-Half map: Half-map B
| File | emd_71669_half_map_2.map | ||||||||||||
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| Annotation | Half-map B | ||||||||||||
| Projections & Slices |
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| Density Histograms |
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Sample components
+Entire : E. coli 70S ribosome bound to Minocycline
+Supramolecule #1: E. coli 70S ribosome bound to Minocycline
+Macromolecule #1: 50S ribosomal protein L33
+Macromolecule #2: 50S ribosomal protein L34
+Macromolecule #3: 50S ribosomal protein L35
+Macromolecule #4: 50S ribosomal protein L36
+Macromolecule #5: 50S ribosomal protein L31
+Macromolecule #7: 30S ribosomal protein S2
+Macromolecule #8: Small ribosomal subunit protein uS3
+Macromolecule #9: Small ribosomal subunit protein uS4
+Macromolecule #10: Small ribosomal subunit protein uS5
+Macromolecule #11: Small ribosomal subunit protein bS6
+Macromolecule #12: Small ribosomal subunit protein uS7
+Macromolecule #13: Small ribosomal subunit protein uS8
+Macromolecule #14: Small ribosomal subunit protein uS9
+Macromolecule #15: Small ribosomal subunit protein uS10
+Macromolecule #16: 30S ribosomal protein S11
+Macromolecule #17: Small ribosomal subunit protein uS12
+Macromolecule #18: Small ribosomal subunit protein uS13
+Macromolecule #19: Small ribosomal subunit protein uS14
+Macromolecule #20: Small ribosomal subunit protein uS15
+Macromolecule #21: Small ribosomal subunit protein bS16
+Macromolecule #22: Small ribosomal subunit protein uS17
+Macromolecule #23: Small ribosomal subunit protein bS18
+Macromolecule #24: Small ribosomal subunit protein uS19
+Macromolecule #25: Small ribosomal subunit protein bS20
+Macromolecule #26: Small ribosomal subunit protein bS21
+Macromolecule #31: 50S ribosomal protein L2
+Macromolecule #32: 50S ribosomal protein L3
+Macromolecule #33: Large ribosomal subunit protein uL4
+Macromolecule #34: Large ribosomal subunit protein uL5
+Macromolecule #35: Large ribosomal subunit protein uL6
+Macromolecule #36: Large ribosomal subunit protein bL9
+Macromolecule #37: Large ribosomal subunit protein uL13
+Macromolecule #38: Large ribosomal subunit protein uL14
+Macromolecule #39: Large ribosomal subunit protein uL15
+Macromolecule #40: 50S ribosomal protein L16
+Macromolecule #41: Large ribosomal subunit protein bL17
+Macromolecule #42: Large ribosomal subunit protein uL18
+Macromolecule #43: Large ribosomal subunit protein bL19
+Macromolecule #44: 50S ribosomal protein L20
+Macromolecule #45: Ribosomal protein L21
+Macromolecule #46: 50S ribosomal protein L22
+Macromolecule #47: 50S ribosomal protein L23
+Macromolecule #48: 50S ribosomal protein L24
+Macromolecule #49: Large ribosomal subunit protein bL25
+Macromolecule #50: 50S ribosomal protein L27
+Macromolecule #51: 50S ribosomal protein L28
+Macromolecule #52: Large ribosomal subunit protein uL29
+Macromolecule #53: 50S ribosomal protein L30
+Macromolecule #54: 50S ribosomal protein L32
+Macromolecule #6: 16S rRNA
+Macromolecule #27: mRNA
+Macromolecule #28: P-site tRNA
+Macromolecule #29: 23S rRNA
+Macromolecule #30: 5S rRNA
+Macromolecule #55: ZINC ION
+Macromolecule #56: MAGNESIUM ION
+Macromolecule #57: POTASSIUM ION
+Macromolecule #58: (4S,4AS,5AR,12AS)-4,7-BIS(DIMETHYLAMINO)-3,10,12,12A-TETRAHYDROXY...
+Macromolecule #59: water
-Experimental details
-Structure determination
| Method | cryo EM |
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Processing | single particle reconstruction |
| Aggregation state | particle |
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Sample preparation
| Buffer | pH: 7.5 |
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| Vitrification | Cryogen name: ETHANE |
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Electron microscopy
| Microscope | TFS KRIOS |
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| Image recording | Film or detector model: GATAN K3 (6k x 4k) / Average electron dose: 50.0 e/Å2 |
| Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
| Electron optics | C2 aperture diameter: 70.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 2.0 µm / Nominal defocus min: 1.0 µm / Nominal magnification: 81000 |
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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About Yorodumi




Keywords
Authors
United States, 1 items
Citation














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Processing
FIELD EMISSION GUN

