+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-33834 | |||||||||
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Title | Subtomogram average of 70S ribosome (11x11) | |||||||||
Map data | ||||||||||
Sample |
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Keywords | 70S / bacterial / RIBOSOME | |||||||||
Biological species | Escherichia coli (E. coli) | |||||||||
Method | subtomogram averaging / cryo EM / Resolution: 3.1 Å | |||||||||
Authors | Eisenstein F / Danev R | |||||||||
Funding support | Japan, 2 items
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Citation | Journal: Nat Methods / Year: 2023 Title: Parallel cryo electron tomography on in situ lamellae. Authors: Fabian Eisenstein / Haruaki Yanagisawa / Hiroka Kashihara / Masahide Kikkawa / Sachiko Tsukita / Radostin Danev / Abstract: In situ cryo electron tomography of cryo focused ion beam milled samples has emerged in recent years as a powerful technique for structural studies of macromolecular complexes in their native ...In situ cryo electron tomography of cryo focused ion beam milled samples has emerged in recent years as a powerful technique for structural studies of macromolecular complexes in their native cellular environment. However, the possibilities for recording tomographic tilt series in a high-throughput manner are limited, in part by the lamella-shaped samples. Here we utilize a geometrical sample model and optical image shift to record tens of tilt series in parallel, thereby saving time and gaining access to sample areas conventionally used for tracking specimen movement. The parallel cryo electron tomography (PACE-tomo) method achieves a throughput faster than 5 min per tilt series and allows for the collection of sample areas that were previously unreachable, thus maximizing the amount of data from each lamella. Performance testing with ribosomes in vitro and in situ on state-of-the-art and general-purpose microscopes demonstrated the high throughput and quality of PACE-tomo. | |||||||||
History |
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-Structure visualization
Supplemental images |
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-Downloads & links
-EMDB archive
Map data | emd_33834.map.gz | 142.2 MB | EMDB map data format | |
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Header (meta data) | emd-33834-v30.xml emd-33834.xml | 15.9 KB 15.9 KB | Display Display | EMDB header |
FSC (resolution estimation) | emd_33834_fsc.xml | 14.1 KB | Display | FSC data file |
Images | emd_33834.png | 128.5 KB | ||
Masks | emd_33834_msk_1.map | 244.1 MB | Mask map | |
Filedesc metadata | emd-33834.cif.gz | 4.3 KB | ||
Others | emd_33834_half_map_1.map.gz emd_33834_half_map_2.map.gz | 119.7 MB 119.7 MB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-33834 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-33834 | HTTPS FTP |
-Validation report
Summary document | emd_33834_validation.pdf.gz | 1.1 MB | Display | EMDB validaton report |
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Full document | emd_33834_full_validation.pdf.gz | 1.1 MB | Display | |
Data in XML | emd_33834_validation.xml.gz | 22.3 KB | Display | |
Data in CIF | emd_33834_validation.cif.gz | 29 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-33834 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-33834 | HTTPS FTP |
-Related structure data
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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Related items in Molecule of the Month |
-Map
File | Download / File: emd_33834.map.gz / Format: CCP4 / Size: 244.1 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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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_33834_msk_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Half map: #1
File | emd_33834_half_map_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Half map: #2
File | emd_33834_half_map_2.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Sample components
-Entire : 70S ribosome
Entire | Name: 70S ribosome |
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Components |
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-Supramolecule #1: 70S ribosome
Supramolecule | Name: 70S ribosome / type: complex / ID: 1 / Parent: 0 |
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Source (natural) | Organism: Escherichia coli (E. coli) / Strain: DH5alpha |
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | subtomogram averaging |
Aggregation state | particle |
-Sample preparation
Concentration | 1.7 mg/mL | |||||||||||||||
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Buffer | pH: 7.5 Component:
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Grid | Model: UltrAuFoil R1.2/1.3 / Mesh: 300 / Support film - Material: GOLD / Support film - topology: HOLEY | |||||||||||||||
Vitrification | Cryogen name: ETHANE-PROPANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV |
-Electron microscopy
Microscope | TFS KRIOS |
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Image recording | Film or detector model: GATAN K3 (6k x 4k) / Detector mode: COUNTING / Number grids imaged: 1 / Average exposure time: 0.25 sec. / Average electron dose: 4.2 e/Å2 Details: 121 tilt series were recorded in parallel using beam image shift |
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | C2 aperture diameter: 50.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 3.0 µm / Nominal defocus min: 3.0 µm |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |