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- EMDB-43144: MicroED structure of SARS-CoV-2 main protease (MPro/3CLPro) with ... -
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Open data
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Basic information
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Title | MicroED structure of SARS-CoV-2 main protease (MPro/3CLPro) with missing cone eliminated by suspended drop | ||||||||||||
![]() | 1.5 sigma | ||||||||||||
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![]() | Cysteine Protease / Viral Protease / Viral Assembly / VIRAL PROTEIN | ||||||||||||
Function / homology | ![]() protein guanylyltransferase activity / RNA endonuclease activity producing 3'-phosphomonoesters, hydrolytic mechanism / mRNA guanylyltransferase activity / 5'-3' RNA helicase activity / Lyases; Phosphorus-oxygen lyases / Assembly of the SARS-CoV-2 Replication-Transcription Complex (RTC) / Maturation of replicase proteins / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of TBK1 activity / ISG15-specific peptidase activity / TRAF3-dependent IRF activation pathway ...protein guanylyltransferase activity / RNA endonuclease activity producing 3'-phosphomonoesters, hydrolytic mechanism / mRNA guanylyltransferase activity / 5'-3' RNA helicase activity / Lyases; Phosphorus-oxygen lyases / Assembly of the SARS-CoV-2 Replication-Transcription Complex (RTC) / Maturation of replicase proteins / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of TBK1 activity / ISG15-specific peptidase activity / TRAF3-dependent IRF activation pathway / Transcription of SARS-CoV-2 sgRNAs / Translation of Replicase and Assembly of the Replication Transcription Complex / snRNP Assembly / Replication of the SARS-CoV-2 genome / double membrane vesicle viral factory outer membrane / Hydrolases; Acting on ester bonds; Exoribonucleases producing 5'-phosphomonoesters / host cell endoplasmic reticulum-Golgi intermediate compartment / SARS coronavirus main proteinase / 3'-5'-RNA exonuclease activity / 5'-3' DNA helicase activity / host cell endosome / symbiont-mediated degradation of host mRNA / mRNA guanylyltransferase / symbiont-mediated suppression of host ISG15-protein conjugation / G-quadruplex RNA binding / symbiont-mediated suppression of host toll-like receptor signaling pathway / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of IRF3 activity / omega peptidase activity / SARS-CoV-2 modulates host translation machinery / mRNA (guanine-N7)-methyltransferase / host cell Golgi apparatus / methyltransferase cap1 / symbiont-mediated perturbation of host ubiquitin-like protein modification / symbiont-mediated suppression of host NF-kappaB cascade / DNA helicase / methyltransferase cap1 activity / ubiquitinyl hydrolase 1 / cysteine-type deubiquitinase activity / mRNA 5'-cap (guanine-N7-)-methyltransferase activity / forked DNA-dependent helicase activity / single-stranded 3'-5' DNA helicase activity / four-way junction helicase activity / double-stranded DNA helicase activity / Hydrolases; Acting on peptide bonds (peptidases); Cysteine endopeptidases / single-stranded RNA binding / regulation of autophagy / host cell perinuclear region of cytoplasm / viral protein processing / lyase activity / host cell endoplasmic reticulum membrane / RNA helicase / symbiont-mediated suppression of host type I interferon-mediated signaling pathway / symbiont-mediated suppression of host gene expression / copper ion binding / viral translational frameshifting / symbiont-mediated activation of host autophagy / RNA-directed RNA polymerase / cysteine-type endopeptidase activity / viral RNA genome replication / RNA-directed RNA polymerase activity / DNA-templated transcription / lipid binding / host cell nucleus / SARS-CoV-2 activates/modulates innate and adaptive immune responses / ATP hydrolysis activity / proteolysis / RNA binding / zinc ion binding / ATP binding / membrane Similarity search - Function | ||||||||||||
Biological species | ![]() ![]() | ||||||||||||
Method | electron crystallography / cryo EM / Resolution: 2.15 Å | ||||||||||||
![]() | Bu G / Gillman C / Danelius E / Hattne J / Nannenga BL / Gonen T | ||||||||||||
Funding support | ![]()
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![]() | ![]() Title: Eliminating the missing cone challenge through innovative approaches. Authors: Cody Gillman / Guanhong Bu / Emma Danelius / Johan Hattne / Brent L Nannenga / Tamir Gonen / ![]() Abstract: Microcrystal electron diffraction (MicroED) has emerged as a powerful technique for unraveling molecular structures from microcrystals too small for X-ray diffraction. However, a significant hurdle ...Microcrystal electron diffraction (MicroED) has emerged as a powerful technique for unraveling molecular structures from microcrystals too small for X-ray diffraction. However, a significant hurdle arises with plate-like crystals that consistently orient themselves flat on the electron microscopy grid. If the normal of the plate correlates with the axes of the crystal lattice, the crystal orientations accessible for measurement are restricted because the crystal cannot be arbitrarily rotated. This limits the information that can be acquired, resulting in a missing cone of information. We recently introduced a novel crystallization strategy called suspended drop crystallization and proposed that crystals in a suspended drop could effectively address the challenge of preferred crystal orientation. Here we demonstrate the success of the suspended drop approach in eliminating the missing cone in two samples that crystallize as thin plates: bovine liver catalase and the SARS‑CoV‑2 main protease (Mpro). This innovative solution proves indispensable for crystals exhibiting systematic preferred orientations, unlocking new possibilities for structure determination by MicroED. | ||||||||||||
History |
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Structure visualization
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 1.8 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 14.7 KB 14.7 KB | Display Display | ![]() |
Images | ![]() | 126.1 KB | ||
Filedesc metadata | ![]() | 5.7 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 8vd7MC ![]() 9bdjC M: atomic model generated by this map C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Annotation | 1.5 sigma | ||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. generated in cubic-lattice coordinate | ||||||||||||||||||||||||||||||||||||
Voxel size | X: 0.713 Å / Y: 0.694 Å / Z: 0.709 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 5 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
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Sample components
-Entire : SARS-CoV-2 main protease (Mpro)
Entire | Name: SARS-CoV-2 main protease (Mpro) |
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Components |
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-Supramolecule #1: SARS-CoV-2 main protease (Mpro)
Supramolecule | Name: SARS-CoV-2 main protease (Mpro) / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1 |
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Source (natural) | Organism: ![]() ![]() |
-Macromolecule #1: 3C-like proteinase nsp5
Macromolecule | Name: 3C-like proteinase nsp5 / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO / EC number: SARS coronavirus main proteinase |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 33.825547 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: SGFRKMAFPS GKVEGCMVQV TCGTTTLNGL WLDDVVYCPR HVICTSEDML NPNYEDLLIR KSNHNFLVQA GNVQLRVIGH SMQNCVLKL KVDTANPKTP KYKFVRIQPG QTFSVLACYN GSPSGVYQCA MRPNFTIKGS FLNGSCGSVG FNIDYDCVSF C YMHHMELP ...String: SGFRKMAFPS GKVEGCMVQV TCGTTTLNGL WLDDVVYCPR HVICTSEDML NPNYEDLLIR KSNHNFLVQA GNVQLRVIGH SMQNCVLKL KVDTANPKTP KYKFVRIQPG QTFSVLACYN GSPSGVYQCA MRPNFTIKGS FLNGSCGSVG FNIDYDCVSF C YMHHMELP TGVHAGTDLE GNFYGPFVDR QTAQAAGTDT TITVNVLAWL YAAVINGDRW FLNRFTTTLN DFNLVAMKYN YE PLTQDHV DILGPLSAQT GIAVLDMCAS LKELLQNGMN GRTILGSALL EDEFTPFDVV RQCSGVTFQ UniProtKB: Replicase polyprotein 1ab |
-Macromolecule #2: CHLORIDE ION
Macromolecule | Name: CHLORIDE ION / type: ligand / ID: 2 / Number of copies: 1 / Formula: CL |
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Molecular weight | Theoretical: 35.453 Da |
-Macromolecule #3: water
Macromolecule | Name: water / type: ligand / ID: 3 / Number of copies: 6 / Formula: HOH |
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Molecular weight | Theoretical: 18.015 Da |
Chemical component information | ![]() ChemComp-HOH: |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | electron crystallography |
Aggregation state | 3D array |
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Sample preparation
Buffer | pH: 6.5 / Details: 0.1 M MES pH 6.5, 20% PEG 3350, 5% DMSO. |
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Vitrification | Cryogen name: ETHANE / Chamber humidity: 95 % / Chamber temperature: 293 K |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Temperature | Min: 75.0 K / Max: 85.0 K |
Image recording | Film or detector model: FEI FALCON IV (4k x 4k) / Number diffraction images: 420 / Average exposure time: 1.0 sec. / Average electron dose: 0.0025 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: DIFFRACTION / Nominal defocus max: 0.0 µm / Nominal defocus min: 0.0 µm / Camera length: 2480 mm |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN / Tilt angle: -40.0, 70.0 |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 2.15 Å / Resolution method: DIFFRACTION PATTERN/LAYERLINES | ||||||||||||||||||||||||||||||||||||||||||
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Crystallography statistics | Number intensities measured: 123734 / Number structure factors: 14825 / Fourier space coverage: 95.5 / R merge: 25.6 / Overall phase residual: 0 / Phase error rejection criteria: none / High resolution: 2.15 Å Shell:
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-Atomic model buiding 1
Refinement | Protocol: OTHER / Target criteria: Rwork/Rfree gap of less than 5% |
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Output model | ![]() PDB-8vd7: |