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Open data
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Basic information
| Entry | ![]() | |||||||||
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| Title | C. acnes 70S ribosome bound to Sarecycline | |||||||||
Map data | C. acnes 70S ribosome bound to Sarecycline | |||||||||
Sample |
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Keywords | Tetracycline / bacterial ribosome / protein translation / Sarecycline / Antibiotic / RIBOSOME | |||||||||
| Function / homology | Function and homology informationlarge ribosomal subunit / transferase activity / ribosomal small subunit assembly / ribosome biogenesis / ribosomal small subunit biogenesis / 5S rRNA binding / small ribosomal subunit / ribosomal large subunit assembly / small ribosomal subunit rRNA binding / cytosolic small ribosomal subunit ...large ribosomal subunit / transferase activity / ribosomal small subunit assembly / ribosome biogenesis / ribosomal small subunit biogenesis / 5S rRNA binding / small ribosomal subunit / ribosomal large subunit assembly / 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 / mRNA binding / RNA binding / zinc ion binding / metal ion binding / cytoplasm / cytosol Similarity search - Function | |||||||||
| Biological species | Cutibacterium acnes (bacteria) / ![]() ![]() Thermus thermophilus (bacteria) | |||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 2.5 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. | |||||||||
| History |
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Structure visualization
| Supplemental images |
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Downloads & links
-EMDB archive
| Map data | emd_71683.map.gz | 164.2 MB | EMDB map data format | |
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| Header (meta data) | emd-71683-v30.xml emd-71683.xml | 75.2 KB 75.2 KB | Display Display | EMDB header |
| FSC (resolution estimation) | emd_71683_fsc.xml | 14.4 KB | Display | FSC data file |
| Images | emd_71683.png | 96.6 KB | ||
| Masks | emd_71683_msk_1.map | 325 MB | Mask map | |
| Filedesc metadata | emd-71683.cif.gz | 15.2 KB | ||
| Others | emd_71683_half_map_1.map.gz emd_71683_half_map_2.map.gz | 301.1 MB 301.1 MB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-71683 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-71683 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 9pj8MC ![]() 9pihC ![]() 9piiC ![]() 9pijC ![]() 9pj7C ![]() 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_71683.map.gz / Format: CCP4 / Size: 325 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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| Annotation | C. acnes 70S ribosome bound to Sarecycline | ||||||||||||||||||||||||||||||||||||
| 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_71683_msk_1.map | ||||||||||||
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| Projections & Slices |
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| Density Histograms |
-Half map: Half-map A
| File | emd_71683_half_map_1.map | ||||||||||||
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| Annotation | Half-map A | ||||||||||||
| Projections & Slices |
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| Density Histograms |
-Half map: Half-map B
| File | emd_71683_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 : C. acnes 70S ribosome bound to Sarecycline
+Supramolecule #1: C. acnes 70S ribosome bound to Sarecycline
+Macromolecule #1: 50S ribosomal protein L33
+Macromolecule #2: 50S ribosomal protein L34
+Macromolecule #3: Large ribosomal subunit protein bL35
+Macromolecule #4: 50S ribosomal protein L36
+Macromolecule #5: 50S ribosomal protein L31
+Macromolecule #7: 30S ribosomal protein S2
+Macromolecule #9: 30S ribosomal protein S4
+Macromolecule #10: Small ribosomal subunit protein uS5
+Macromolecule #11: 30S ribosomal protein S6
+Macromolecule #12: 30S ribosomal protein S3
+Macromolecule #13: 30S ribosomal protein S8
+Macromolecule #14: 30S ribosomal protein S7
+Macromolecule #15: 30S ribosomal protein S9
+Macromolecule #16: 30S ribosomal protein S11
+Macromolecule #17: 30S ribosomal protein S12
+Macromolecule #18: Small ribosomal subunit protein uS10
+Macromolecule #19: 30S ribosomal protein S13
+Macromolecule #20: 30S ribosomal protein S15
+Macromolecule #21: 30S ribosomal protein S16
+Macromolecule #22: 30S ribosomal protein S17
+Macromolecule #23: 30S ribosomal protein S18
+Macromolecule #24: 30S ribosomal protein S14 type Z
+Macromolecule #25: 30S ribosomal protein S20
+Macromolecule #26: 30S ribosomal protein S19
+Macromolecule #27: 50S ribosomal protein bL37
+Macromolecule #28: AURKAIP1/COX24 domain-containing protein
+Macromolecule #32: 50S ribosomal protein L2
+Macromolecule #33: 50S ribosomal protein L3
+Macromolecule #34: 50S ribosomal protein L4
+Macromolecule #35: 50S ribosomal protein L5
+Macromolecule #36: 50S ribosomal protein L6
+Macromolecule #37: 50S ribosomal protein L13
+Macromolecule #38: 50S ribosomal protein L14
+Macromolecule #39: 50S ribosomal protein L15
+Macromolecule #40: 50S ribosomal protein L16
+Macromolecule #41: Large ribosomal subunit protein bL17
+Macromolecule #42: 50S ribosomal protein L18
+Macromolecule #43: 50S ribosomal protein L19
+Macromolecule #44: 50S ribosomal protein L20
+Macromolecule #45: Large ribosomal subunit protein bL21
+Macromolecule #46: 50S ribosomal protein L22
+Macromolecule #47: 50S ribosomal protein L23
+Macromolecule #48: Large ribosomal subunit protein uL24
+Macromolecule #49: 50S ribosomal protein L25
+Macromolecule #50: 50S ribosomal protein L27
+Macromolecule #51: 50S ribosomal protein L28
+Macromolecule #52: 50S ribosomal protein L29
+Macromolecule #53: 50S ribosomal protein L30
+Macromolecule #54: 50S ribosomal protein L32
+Macromolecule #6: 16S rRNA
+Macromolecule #8: initiator tRNA Met (76-MER)
+Macromolecule #29: mRNA 32MF
+Macromolecule #30: 23S rRNA
+Macromolecule #31: 5S rRNA
+Macromolecule #55: ZINC ION
+Macromolecule #56: MAGNESIUM ION
+Macromolecule #57: Sarecycline
+Macromolecule #58: 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
Cutibacterium acnes (bacteria)
Thermus thermophilus (bacteria)
Authors
United States, 1 items
Citation

















Z (Sec.)
Y (Row.)
X (Col.)














































Processing
FIELD EMISSION GUN

