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- PDB-8eyj: Crystal Structure of uncleaved SARS-CoV-2 Main Protease C145S mut... -
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Basic information
Entry | Database: PDB / ID: 8eyj | |||||||||
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Title | Crystal Structure of uncleaved SARS-CoV-2 Main Protease C145S mutant in complex with Nirmatrelvir | |||||||||
![]() | 3C-like proteinase nsp5 | |||||||||
![]() | VIRAL PROTEIN / Main Protease / complex / Nirmatrelvir | |||||||||
Function / homology | ![]() 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 perinuclear region of cytoplasm / host cell endoplasmic reticulum membrane / 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 | |||||||||
Biological species | ![]() ![]() | |||||||||
Method | ![]() ![]() ![]() | |||||||||
![]() | Noske, G.D. / Godoy, A.S. / Oliva, G. | |||||||||
Funding support | ![]()
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![]() | ![]() Title: An in-solution snapshot of SARS-COV-2 main protease maturation process and inhibition. Authors: Gabriela Dias Noske / Yun Song / Rafaela Sachetto Fernandes / Rod Chalk / Haitem Elmassoudi / Lizbé Koekemoer / C David Owen / Tarick J El-Baba / Carol V Robinson / / Glaucius Oliva / Andre Schutzer Godoy / ![]() ![]() Abstract: The main protease from SARS-CoV-2 (M) is responsible for cleavage of the viral polyprotein. M self-processing is called maturation, and it is crucial for enzyme dimerization and activity. Here we use ...The main protease from SARS-CoV-2 (M) is responsible for cleavage of the viral polyprotein. M self-processing is called maturation, and it is crucial for enzyme dimerization and activity. Here we use C145S M to study the structure and dynamics of N-terminal cleavage in solution. Native mass spectroscopy analysis shows that mixed oligomeric states are composed of cleaved and uncleaved particles, indicating that N-terminal processing is not critical for dimerization. A 3.5 Å cryo-EM structure provides details of M N-terminal cleavage outside the constrains of crystal environment. We show that different classes of inhibitors shift the balance between oligomeric states. While non-covalent inhibitor MAT-POS-e194df51-1 prevents dimerization, the covalent inhibitor nirmatrelvir induces the conversion of monomers into dimers, even with intact N-termini. Our data indicates that the M dimerization is triggered by induced fit due to covalent linkage during substrate processing rather than the N-terminal processing. | |||||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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PDBx/mmCIF format | ![]() | 259.6 KB | Display | ![]() |
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PDB format | ![]() | 201.5 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
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-Validation report
Summary document | ![]() | 1.1 MB | Display | ![]() |
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Full document | ![]() | 1.1 MB | Display | |
Data in XML | ![]() | 31.2 KB | Display | |
Data in CIF | ![]() | 48.2 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 8ey2C ![]() 7mbgS S: Starting model for refinement C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
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Assembly
Deposited unit | ![]()
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Unit cell |
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Components
#1: Protein | Mass: 33937.609 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() Gene: rep, 1a-1b / Production host: ![]() ![]() #2: Chemical | #3: Water | ChemComp-HOH / | Has ligand of interest | Y | |
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-Experimental details
-Experiment
Experiment | Method: ![]() |
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Sample preparation
Crystal | Density Matthews: 2.63 Å3/Da / Density % sol: 53.28 % |
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Crystal grow | Temperature: 293 K / Method: vapor diffusion / Details: 0.1 M MES pH 6.7, 5% DMSO, 8% PEG 4000 |
-Data collection
Diffraction | Mean temperature: 100 K / Serial crystal experiment: N |
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Diffraction source | Source: ![]() |
Detector | Type: DECTRIS PILATUS 2M / Detector: PIXEL / Date: May 19, 2022 |
Radiation | Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 0.97718 Å / Relative weight: 1 |
Reflection | Resolution: 1.738→101.969 Å / Num. obs: 53189 / % possible obs: 71.5 % / Redundancy: 6.7 % / CC1/2: 0.995 / Rmerge(I) obs: 0.07 / Net I/σ(I): 8.9 |
Reflection shell | Resolution: 1.738→1.8 Å / Mean I/σ(I) obs: 1.4 / Num. unique obs: 267 / CC1/2: 0.556 / Rpim(I) all: 0.476 |
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Processing
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Refinement | Method to determine structure: ![]() Starting model: 7MBG Resolution: 1.738→72.788 Å / Cor.coef. Fo:Fc: 0.951 / Cor.coef. Fo:Fc free: 0.932 / SU B: 3.632 / SU ML: 0.111 / Cross valid method: FREE R-VALUE / ESU R: 0.167 / ESU R Free: 0.152 Details: Hydrogens have been added in their riding positions
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Solvent computation | Ion probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: MASK BULK SOLVENT | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 25.399 Å2
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Refinement step | Cycle: LAST / Resolution: 1.738→72.788 Å
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Refine LS restraints |
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LS refinement shell |
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