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- EMDB-43144: MicroED structure of SARS-CoV-2 main protease (MPro/3CLPro) with ... -

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Basic information

Entry
Database: EMDB / ID: EMD-43144
TitleMicroED structure of SARS-CoV-2 main protease (MPro/3CLPro) with missing cone eliminated by suspended drop
Map data1.5 sigma
Sample
  • Complex: SARS-CoV-2 main protease (Mpro)
    • Protein or peptide: 3C-like proteinase nsp5
  • Ligand: CHLORIDE ION
  • Ligand: water
KeywordsCysteine Protease / Viral Protease / Viral Assembly / VIRAL PROTEIN
Function / homology
Function and homology information


protein guanylyltransferase activity / RNA endonuclease activity, producing 3'-phosphomonoesters / mRNA guanylyltransferase activity / 5'-3' RNA helicase activity / Lyases; Phosphorus-oxygen lyases / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of TBK1 activity / Assembly of the SARS-CoV-2 Replication-Transcription Complex (RTC) / Maturation of replicase proteins / ISG15-specific peptidase activity / Transcription of SARS-CoV-2 sgRNAs ...protein guanylyltransferase activity / RNA endonuclease activity, producing 3'-phosphomonoesters / mRNA guanylyltransferase activity / 5'-3' RNA helicase activity / Lyases; Phosphorus-oxygen lyases / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of TBK1 activity / Assembly of the SARS-CoV-2 Replication-Transcription Complex (RTC) / Maturation of replicase proteins / ISG15-specific peptidase activity / Transcription of SARS-CoV-2 sgRNAs / Translation of Replicase and Assembly of the Replication Transcription Complex / TRAF3-dependent IRF activation pathway / Replication of the SARS-CoV-2 genome / snRNP Assembly / double membrane vesicle viral factory outer membrane / Hydrolases; Acting on ester bonds; Exoribonucleases producing 5'-phosphomonoesters / 5'-3' DNA helicase activity / SARS coronavirus main proteinase / host cell endosome / host cell endoplasmic reticulum-Golgi intermediate compartment / 3'-5'-RNA exonuclease activity / symbiont-mediated suppression of host toll-like receptor signaling pathway / symbiont-mediated degradation of host mRNA / mRNA guanylyltransferase / symbiont-mediated suppression of host ISG15-protein conjugation / G-quadruplex RNA binding / SARS-CoV-2 modulates host translation machinery / omega peptidase activity / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of IRF3 activity / mRNA (guanine-N7)-methyltransferase / host cell Golgi apparatus / methyltransferase cap1 / symbiont-mediated perturbation of host ubiquitin-like protein modification / mRNA (nucleoside-2'-O-)-methyltransferase activity / DNA helicase / mRNA 5'-cap (guanine-N7-)-methyltransferase activity / ubiquitinyl hydrolase 1 / cysteine-type deubiquitinase activity / Hydrolases; Acting on peptide bonds (peptidases); Cysteine endopeptidases / single-stranded RNA binding / host cell endoplasmic reticulum membrane / host cell perinuclear region of cytoplasm / viral protein processing / lyase activity / symbiont-mediated suppression of host type I interferon-mediated signaling pathway / RNA helicase / induction by virus of host autophagy / copper ion binding / RNA-directed RNA polymerase / viral RNA genome replication / cysteine-type endopeptidase activity / RNA-dependent RNA polymerase activity / virus-mediated perturbation of host defense response / 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
RNA-dependent RNA polymerase, SARS-CoV-like / Nonstructural protein 14, betacoronavirus / NSP15, NendoU domain, coronavirus / : / : / Coronavirus Nonstructural protein 13, 1B domain / Coronavirus Non-structural protein 13, zinc-binding domain / Coronavirus Nonstructural protein 13, stalk domain / : / Coronavirus Nsp12 Interface domain profile. ...RNA-dependent RNA polymerase, SARS-CoV-like / Nonstructural protein 14, betacoronavirus / NSP15, NendoU domain, coronavirus / : / : / Coronavirus Nonstructural protein 13, 1B domain / Coronavirus Non-structural protein 13, zinc-binding domain / Coronavirus Nonstructural protein 13, stalk domain / : / Coronavirus Nsp12 Interface domain profile. / Nonstructural protein 15, middle domain, alpha/betacoronavirus / Nonstructural protein 15, N-terminal domain, alpha/beta-coronavirus / NSP14, guanine-N7-methyltransferase domain, coronavirus / NSP12 RNA-dependent RNA polymerase, coronavirus / Coronavirus (CoV) guanine-N7-methyltransferase (N7-MTase) domain profile. / Coronavirus (CoV) Nsp15 N-terminal oligomerization domain profile. / Nidovirus 2-O-methyltransferase / Coronavirus Nsp12 RNA-dependent RNA polymerase (RdRp) domain profile. / Nidovirus 3'-5' exoribonuclease domain / Nidovirus 2'-O-methyltransferase (2'-O-MTase) domain profile. / Nidovirus 3'-5' exoribonuclease (ExoN) domain profile. / Nonstructural protein 13, 1B domain, coronavirus / Arterivirus Nsp11 N-terminal/Coronavirus NSP15 middle domain / Non-structural protein NSP15, N-terminal domain superfamily, coronavirus / Non-structural protein NSP15, middle domain superfamily / Coronavirus replicase NSP15, N-terminal oligomerization / Nonstructural protein 15, middle domain, coronavirus / Coronavirus replicase NSP15, middle domain / Coronavirus replicase NSP15, N-terminal oligomerisation / Arterivirus Nsp11 N-terminal/coronavirus NSP15 middle (AV-Nsp11N/CoV-Nsp15M) domain profile. / Non-structural protein NSP16, coronavirus-like / Non-structural protein 14, coronavirus / RNA polymerase, N-terminal, coronavirus / Coronavirus 2'-O-methyltransferase / Coronavirus proofreading exoribonuclease / Coronavirus RNA-dependent RNA polymerase, N-terminal / Nidoviral uridylate-specific endoribonuclease (NendoU) domain profile. / Nidovirus RdRp-associated nucleotidyl transferase (NiRAN) domain / Nonstructural protein 13, zinc-binding domain, coronavirus-like / Coronaviridae zinc-binding (CV ZBD) domain profile. / Nidovirus RdRp-associated nucleotidyl transferase (NiRAN) domain profile. / Endoribonuclease EndoU-like / NendoU domain, nidovirus / Coronavirus replicase NSP15, uridylate-specific endoribonuclease / DNA2/NAM7 helicase-like, C-terminal / AAA domain / Lipocalin signature. / (+) RNA virus helicase core domain / (+)RNA virus helicase core domain profile. / Non-structural protein NSP3, SUD-N (Mac2) domain, betacoronavirus / Sarbecovirus Nsp3c-N domain profile. / Non-structural protein NSP3, N-terminal, betacoronavirus / Polyprotein cleavage domain PL2pro superfamily, betacoronavirus / Non-structural protein NSP3, SUD-N (Mac2) domain superfamily, betacoronavirus / Betacoronavirus SUD-C domain / Betacoronavirus replicase NSP3, N-terminal / NSP1 globular domain superfamily, betacoronavirus / Non-structural protein 2, SARS-CoV-like / Carbamoyl-phosphate synthase subdomain signature 2. / : / Betacoronavirus Nsp3e group 2-specific marker (G2M) domain profile. / NSP1, C-terminal domain, betacoronavirus / Betacoronavirus Nsp3c-M domain profile. / NSP1, globular domain, betacoronavirus / Non-structural protein NSP3, SUD-M domain, betacoronavirus / Non-structural protein NSP3, SUD-M domain superfamily, betacoronavirus / Betacoronavirus replicase NSP1 / Betacoronavirus single-stranded poly(A) binding domain / Betacoronavirus (BetaCoV) Nsp1 C-terminal domain profile. / Betacoronavirus Nsp3c-C domain profile. / Betacoronavirus Nsp3e nucleic acid-binding (NAB) domain profile. / DPUP/SUD, C-terminal, betacoronavirus / Non-structural protein NSP3, nucleic acid-binding domain superfamily, betacoronavirus / Non-structural protein 6, betacoronavirus / Betacoronavirus nucleic acid-binding (NAB) / Non-structural protein NSP3, nucleic acid-binding domain, betacoronavirus / Non-structural protein NSP3A domain-like superfamily / Papain-like protease, N-terminal domain superfamily, coronavirus / Papain-like viral protease, palm and finger domains, coronavirus / : / Coronavirus 3Ecto domain profile. / : / Coronavirus (CoV) Nsp2 middle domain profile. / Coronavirus (CoV) Nsp2 N-terminal domain profile. / Coronavirus (CoV) Nsp2 C-terminal domain profile. / NSP1, globular domain, alpha/betacoronavirus / : / Coronavirus (CoV) Nsp3 Y domain profile. / Coronavirus (CoV) Nsp1 globular domain profile. / Coronavirus replicase NSP2, N-terminal / Nonstructural protein 2, N-terminal domain, coronavirus / Coronavirus replicase NSP2, C-terminal / Non-structural protein 2, C-terminal domain, coronavirus / Coronavirus Nsp3a Ubl domain profile. / Coronavirus Nsp3d Ubl domain profile. / Coronavirus RNA-dependent RNA polymerase (RdRp) Nsp7 cofactor domain profile. / Coronavirus RNA-dependent RNA polymerase (RdRp) Nsp8 cofactor domain profile. / Coronavirus Nsp9 single-stranded RNA (ssRNA)-binding domain profile. / Coronavirus (CoV) ExoN/MTase coactivator domain profile. / NSP3, first ubiquitin-like (Ubl) domain, coronavirus
Similarity search - Domain/homology
Replicase polyprotein 1ab
Similarity search - Component
Biological speciesSevere acute respiratory syndrome coronavirus 2
Methodelectron crystallography / cryo EM / Resolution: 2.15 Å
AuthorsBu G / Gillman C / Danelius E / Hattne J / Nannenga BL / Gonen T
Funding support United States, 3 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)P41GM136508 United States
Department of Defense (DOD, United States)HDTRA1-21-1-0004 United States
Howard Hughes Medical Institute (HHMI) United States
CitationJournal: J Struct Biol X / Year: 2024
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
DepositionDec 14, 2023-
Header (metadata) releaseJul 17, 2024-
Map releaseJul 17, 2024-
UpdateJul 17, 2024-
Current statusJul 17, 2024Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_43144.png

Downloads & links

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Map

FileDownload / File: emd_43144.map.gz / Format: CCP4 / Size: 3 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Annotation1.5 sigma
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesY (Sec.)X (Row.)Z (Col.)
0.69 Å/pix.
x 111 pix.
= 55.52 Å		0.71 Å/pix.
x 72 pix.
= 115.506 Å		0.71 Å/pix.
x 100 pix.
= 45.376 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

generated in cubic-lattice coordinate

Voxel sizeX: 0.713 Å / Y: 0.694 Å / Z: 0.709 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.11796
Minimum - Maximum-0.23023641 - 0.51170635
Average (Standard dev.)-0.000029205135 (±0.07864179)
SymmetrySpace group: 5
Details

EMDB XML:

Map geometry
Axis orderZXY
Origin-17-42-53
Dimensions72100111
Spacing1628064
CellA: 115.506 Å / B: 55.52 Å / C: 45.376 Å
α: 90.0 ° / β: 101.074 ° / γ: 90.0 °

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Supplemental data

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Sample components

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Entire : SARS-CoV-2 main protease (Mpro)

EntireName: SARS-CoV-2 main protease (Mpro)
Components
  • Complex: SARS-CoV-2 main protease (Mpro)
    • Protein or peptide: 3C-like proteinase nsp5
  • Ligand: CHLORIDE ION
  • Ligand: water

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Supramolecule #1: SARS-CoV-2 main protease (Mpro)

SupramoleculeName: SARS-CoV-2 main protease (Mpro) / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1
Source (natural)Organism: Severe acute respiratory syndrome coronavirus 2

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Macromolecule #1: 3C-like proteinase nsp5

MacromoleculeName: 3C-like proteinase nsp5 / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO / EC number: SARS coronavirus main proteinase
Source (natural)Organism: Severe acute respiratory syndrome coronavirus 2
Molecular weightTheoretical: 33.825547 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: 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

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Macromolecule #2: CHLORIDE ION

MacromoleculeName: CHLORIDE ION / type: ligand / ID: 2 / Number of copies: 1 / Formula: CL
Molecular weightTheoretical: 35.453 Da

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Macromolecule #3: water

MacromoleculeName: water / type: ligand / ID: 3 / Number of copies: 6 / Formula: HOH
Molecular weightTheoretical: 18.015 Da
Chemical component information

ChemComp-HOH:
WATER

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Experimental details

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Structure determination

Methodcryo EM
Processingelectron crystallography
Aggregation state3D array

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Sample preparation

BufferpH: 6.5 / Details: 0.1 M MES pH 6.5, 20% PEG 3350, 5% DMSO.
VitrificationCryogen name: ETHANE / Chamber humidity: 95 % / Chamber temperature: 293 K

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Electron microscopy

MicroscopeFEI TITAN KRIOS
TemperatureMin: 75.0 K / Max: 85.0 K
Image recordingFilm 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 beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: DIFFRACTION / Nominal defocus max: 0.0 µm / Nominal defocus min: 0.0 µm / Camera length: 2480 mm
Sample stageSpecimen 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 reconstructionResolution.type: BY AUTHOR / Resolution: 2.15 Å / Resolution method: DIFFRACTION PATTERN/LAYERLINES
Crystallography statisticsNumber 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:
Shell IDHigh resolutionLow resolutionNumber structure factorsPhase residualFourier space coverageMultiplicity
12.15 Å2.32 Å265245.03000000000000190.0999999999999944.48
22.32 Å2.55 Å268038.21999999999999991.9000000000000068.880000000000001
32.55 Å2.92 Å283238.43999999999999896.40000000000000610.25
42.92 Å3.67 Å292226.599.79999999999999710.26
53.67 Å44.53 Å298416.01000000000000299.2000000000000039.67

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Atomic model buiding 1

RefinementProtocol: OTHER / Target criteria: Rwork/Rfree gap of less than 5%
Output model

PDB-8vd7:
MicroED structure of SARS-CoV-2 main protease (MPro/3CLPro) with missing cone eliminated by suspended drop

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