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- EMDB-0153: RELION-3.0 reconstruction of beta-galactosidase particles in EMPI... -
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Open data
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Basic information
Entry | Database: EMDB / ID: EMD-0153 | |||||||||
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Title | RELION-3.0 reconstruction of beta-galactosidase particles in EMPIAR-10061 | |||||||||
![]() | Postprocessed map. After postprocessing, the map was flipped to get the correct hand. | |||||||||
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Biological species | ![]() ![]() ![]() ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 1.9 Å | |||||||||
![]() | Zivanov J / Nakane T / Scheres SHW | |||||||||
Funding support | ![]()
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![]() | ![]() Title: 2.2 Å resolution cryo-EM structure of β-galactosidase in complex with a cell-permeant inhibitor. Authors: Alberto Bartesaghi / Alan Merk / Soojay Banerjee / Doreen Matthies / Xiongwu Wu / Jacqueline L S Milne / Sriram Subramaniam / ![]() Abstract: Cryo-electron microscopy (cryo-EM) is rapidly emerging as a powerful tool for protein structure determination at high resolution. Here we report the structure of a complex between Escherichia coli β- ...Cryo-electron microscopy (cryo-EM) is rapidly emerging as a powerful tool for protein structure determination at high resolution. Here we report the structure of a complex between Escherichia coli β-galactosidase and the cell-permeant inhibitor phenylethyl β-D-thiogalactopyranoside (PETG), determined by cryo-EM at an average resolution of ~2.2 angstroms (Å). Besides the PETG ligand, we identified densities in the map for ~800 water molecules and for magnesium and sodium ions. Although it is likely that continued advances in detector technology may further enhance resolution, our findings demonstrate that preparation of specimens of adequate quality and intrinsic protein flexibility, rather than imaging or image-processing technologies, now represent the major bottlenecks to routinely achieving resolutions close to 2 Å using single-particle cryo-EM. | |||||||||
History |
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Structure visualization
Movie |
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Structure viewer | EM map: ![]() ![]() ![]() |
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 323.5 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 20.9 KB 20.9 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 15.9 KB | Display | ![]() |
Images | ![]() | 195.7 KB | ||
Masks | ![]() | 347.6 MB | ![]() | |
Others | ![]() ![]() | 277.8 MB 277.9 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 438.6 KB | Display | ![]() |
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Full document | ![]() | 437.7 KB | Display | |
Data in XML | ![]() | 21.6 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
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Links
EMDB pages | ![]() ![]() |
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Map
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Annotation | Postprocessed map. After postprocessing, the map was flipped to get the correct hand. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 0.637 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
-Mask #1
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Projections & Slices |
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Density Histograms |
-Half map: Unfiltered half map 2. Since the refinement was...
File | emd_0153_half_map_1.map | ||||||||||||
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Annotation | Unfiltered half map 2. Since the refinement was performed in the opposite hand, the half map was flipped before deposition. | ||||||||||||
Projections & Slices |
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Density Histograms |
-Half map: Unfiltered half map 1. Since the refinement was...
File | emd_0153_half_map_2.map | ||||||||||||
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Annotation | Unfiltered half map 1. Since the refinement was performed in the opposite hand, the half map was flipped before deposition. | ||||||||||||
Projections & Slices |
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Density Histograms |
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Sample components
-Entire : Escherichia coli beta-galactosidase bound to phenylethyl beta-D-t...
Entire | Name: Escherichia coli beta-galactosidase bound to phenylethyl beta-D-thiogalactopyranoside (PETG) |
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Components |
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-Supramolecule #1: Escherichia coli beta-galactosidase bound to phenylethyl beta-D-t...
Supramolecule | Name: Escherichia coli beta-galactosidase bound to phenylethyl beta-D-thiogalactopyranoside (PETG) type: complex / ID: 1 / Parent: 0 / Macromolecule list: all |
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Source (natural) | Organism: ![]() ![]() |
Recombinant expression | Organism: ![]() ![]() |
Molecular weight | Theoretical: 465 KDa |
-Macromolecule #1: Escherichia coli beta-galactosidase bound to phenylethyl beta-D-t...
Macromolecule | Name: Escherichia coli beta-galactosidase bound to phenylethyl beta-D-thiogalactopyranoside (PETG) type: protein_or_peptide / ID: 1 / Enantiomer: LEVO / EC number: beta-galactosidase |
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Source (natural) | Organism: ![]() ![]() |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MITDSLAVVL QRRDWENPGV TQLNRLAAHP PFASWRNSEE ARTDRPSQQL RSLNGEWRFA WFPAPEAVPE SWLECDLPEA DTVVVPSNW QMHGYDAPIY TNVTYPITVN PPFVPTENPT GCYSLTFNVD ESWLQEGQTR IIFDGVNSAF HLWCNGRWVG Y GQDSRLPS ...String: MITDSLAVVL QRRDWENPGV TQLNRLAAHP PFASWRNSEE ARTDRPSQQL RSLNGEWRFA WFPAPEAVPE SWLECDLPEA DTVVVPSNW QMHGYDAPIY TNVTYPITVN PPFVPTENPT GCYSLTFNVD ESWLQEGQTR IIFDGVNSAF HLWCNGRWVG Y GQDSRLPS EFDLSAFLRA GENRLAVMVL RWSDGSYLED QDMWRMSGIF RDVSLLHKPT TQISDFHVAT RFNDDFSRAV LE AEVQMCG ELRDYLRVTV SLWQGETQVA SGTAPFGGEI IDERGGYADR VTLRLNVENP KLWSAEIPNL YRAVVELHTA DGT LIEAEA CDVGFREVRI ENGLLLLNGK PLLIRGVNRH EHHPLHGQVM DEQTMVQDIL LMKQNNFNAV RCSHYPNHPL WYTL CDRYG LYVVDEANIE THGMVPMNRL TDDPRWLPAM SERVTRMVQR DRNHPSVIIW SLGNESGHGA NHDALYRWIK SVDPS RPVQ YEGGGADTTA TDIICPMYAR VDEDQPFPAV PKWSIKKWLS LPGETRPLIL CEYAHAMGNS LGGFAKYWQA FRQYPR LQG GFVWDWVDQS LIKYDENGNP WSAYGGDFGD TPNDRQFCMN GLVFADRTPH PALTEAKHQQ QFFQFRLSGQ TIEVTSE YL FRHSDNELLH WMVALDGKPL ASGEVPLDVA PQGKQLIELP ELPQPESAGQ LWLTVRVVQP NATAWSEAGH ISAWQQWR L AENLSVTLPA ASHAIPHLTT SEMDFCIELG NKRWQFNRQS GFLSQMWIGD KKQLLTPLRD QFTRAPLDND IGVSEATRI DPNAWVERWK AAGHYQAEAA LLQCTADTLA DAVLITTAHA WQHQGKTLFI SRKTYRIDGS GQMAITVDVE VASDTPHPAR IGLNCQLAQ VAERVNWLGL GPQENYPDRL TAACFDRWDL PLSDMYTPYV FPSENGLRCG TRELNYGPHQ WRGDFQFNIS R YSQQQLME TSHRHLLHAE EGTWLNIDGF HMGIGGDDSW SPSVSAEFQL SAGRYHYQLV WCQK |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Concentration | 2.3 mg/mL |
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Buffer | pH: 8 |
Grid | Model: Quantifoil R2/2 / Mesh: 200 / Support film - Material: CARBON / Support film - topology: HOLEY / Pretreatment - Type: PLASMA CLEANING |
Vitrification | Cryogen name: ETHANE / Chamber humidity: 90 % / Chamber temperature: 90.15 K / Instrument: LEICA EM GP / Details: Blot for 2 seconds before plunging.. |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Temperature | Min: 79.6 K / Max: 79.8 K |
Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: SUPER-RESOLUTION / Digitization - Dimensions - Width: 7676 pixel / Digitization - Dimensions - Height: 7420 pixel / Digitization - Frames/image: 1-38 / Number real images: 1487 / Average electron dose: 44.84 e/Å2 Details: The pixel size is 0.3185 A / super-resolution pixel. |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Calibrated magnification: 215000 / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 2.0 µm / Nominal defocus min: 0.6 µm / Nominal magnification: 215000 |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |