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- PDB-9m9n: Crystal Structure of SARS-CoV-2 Main Protease (Mpro) Mutant del23. -

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Basic information

Entry
Database: PDB / ID: 9m9n
TitleCrystal Structure of SARS-CoV-2 Main Protease (Mpro) Mutant del23.
Components3C-like proteinase nsp5
KeywordsVIRAL PROTEIN / Complex / inhibitor
Function / homology
Function and homology information


viral genome replication / methyltransferase activity / regulation of autophagy / Assembly of the SARS-CoV-2 Replication-Transcription Complex (RTC) / Maturation of replicase proteins / ISG15-specific peptidase activity / Transcription of SARS-CoV-2 sgRNAs / endonuclease activity / Translation of Replicase and Assembly of the Replication Transcription Complex / Replication of the SARS-CoV-2 genome ...viral genome replication / methyltransferase activity / regulation of autophagy / Assembly of the SARS-CoV-2 Replication-Transcription Complex (RTC) / Maturation of replicase proteins / ISG15-specific peptidase activity / Transcription of SARS-CoV-2 sgRNAs / endonuclease activity / Translation of Replicase and Assembly of the Replication Transcription Complex / Replication of the SARS-CoV-2 genome / double membrane vesicle viral factory outer membrane / SARS coronavirus main proteinase / methylation / 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 cytoplasmic pattern recognition receptor signaling pathway via inhibition of IRF3 activity / omega peptidase activity / SARS-CoV-2 modulates host translation machinery / host cell Golgi apparatus / symbiont-mediated perturbation of host ubiquitin-like protein modification / ubiquitinyl hydrolase 1 / cysteine-type deubiquitinase activity / Hydrolases; Acting on peptide bonds (peptidases); Cysteine endopeptidases / single-stranded RNA binding / viral protein processing / host cell perinuclear region of cytoplasm / host cell endoplasmic reticulum membrane / symbiont-mediated suppression of host type I interferon-mediated signaling pathway / symbiont-mediated suppression of host gene expression / symbiont-mediated activation of host autophagy / viral translational frameshifting / cysteine-type endopeptidase activity / lipid binding / host cell nucleus / SARS-CoV-2 activates/modulates innate and adaptive immune responses / proteolysis / zinc ion binding / membrane
Similarity search - Function
Coronavirus replicase NSP2, C-terminal / 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 ...Coronavirus replicase NSP2, C-terminal / 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 / Betacoronavirus single-stranded poly(A) binding domain / 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 / NSP1, C-terminal domain, betacoronavirus / Betacoronavirus (BetaCoV) Nsp1 C-terminal domain profile. / : / Betacoronavirus Nsp3e group 2-specific marker (G2M) 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, betacoronavirus / Non-structural protein NSP3A domain-like superfamily / Non-structural protein NSP3, nucleic acid-binding domain superfamily, betacoronavirus / Non-structural protein 6, betacoronavirus / Betacoronavirus nucleic acid-binding (NAB) / Papain-like viral protease, palm and finger domains, coronavirus / Papain-like protease, N-terminal domain superfamily, coronavirus / Carbamoyl-phosphate synthase subdomain signature 2. / Coronavirus replicase NSP2, N-terminal / : / Coronavirus (CoV) Nsp2 middle domain profile. / NSP1, globular domain, alpha/betacoronavirus / Coronavirus (CoV) Nsp1 globular domain profile. / Coronavirus (CoV) Nsp2 N-terminal domain profile. / Coronavirus (CoV) Nsp2 C-terminal domain profile. / Nonstructural protein 2, N-terminal domain, coronavirus / Non-structural protein 2, C-terminal domain, coronavirus / NSP3, second ubiquitin-like (Ubl) domain, coronavirus / Coronavirus Nsp3a Ubl domain profile. / Coronavirus Nsp3d Ubl domain profile. / NSP3, first ubiquitin-like (Ubl) domain, coronavirus / Peptidase family C16 domain profile. / Coronavirus replicase NSP7 / : / : / Coronavirus Nsp3 ectodomain (3Ecto) 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. / Coronavirus (CoV) Nsp3 Y domain profile. / Coronavirus Nsp4 C-terminal (Nsp4C) domain profile. / Coronavirus main protease (M-pro) domain profile. / Peptidase C30, coronavirus / Peptidase C16, coronavirus / Non-structural protein NSP9, coronavirus / Non-structural protein NSP7, coronavirus / Non-structural protein NSP8, coronavirus / RNA synthesis protein NSP10, coronavirus / Non-structural protein NSP4, C-terminal, coronavirus / RNA synthesis protein NSP10 superfamily, coronavirus / Non-structural protein NSP9 superfamily, coronavirus / Non-structural protein NSP7 superfamily, coronavirus / Non-structural protein NSP8 superfamily, coronavirus / Non-structural protein NSP4, C-terminal superfamily, coronavirus / Papain-like protease, thumb domain superfamily, coronavirus / Peptidase C30, domain 3, coronavirus / Non-structural protein 6, coronavirus / Coronavirus replicase NSP3, C-terminal / Non-structural protein NSP4, N-terminal, coronavirus / Coronavirus endopeptidase C30 / Coronavirus papain-like peptidase / Coronavirus replicase NSP8 / Coronavirus RNA synthesis protein NSP10 / Coronavirus replicase NSP4, C-terminal / Coronavirus replicase NSP6 / Coronavirus replicase NSP4, N-terminal / Coronavirus replicase NSP3, C-terminal / Coronavirus replicase NSP9 / Non-structural protein 3, X-domain-like / Appr-1"-p processing enzyme / Macro domain / Macro domain profile. / Macro domain / Macro domain-like / Peptidase S1, PA clan, chymotrypsin-like fold / Peptidase S1, PA clan
Similarity search - Domain/homology
Replicase polyprotein 1a
Similarity search - Component
Biological speciesSevere acute respiratory syndrome coronavirus 2
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.75 Å
AuthorsShin, S.C. / Seo, J.J. / Yoon, J.M.
Funding support Korea, Republic Of, 1items
OrganizationGrant numberCountry
National Research Foundation (NRF, Korea) Korea, Republic Of
CitationJournal: Nat Commun / Year: 2025
Title: A SARS-CoV-2 M pro mutation conferring ensitrelvir resistance paradoxically increases nirmatrelvir susceptibility.
Authors: Min, S.C. / Seo, J.J. / Jeong, J.H. / Kim, B.K. / Park, J.H. / Lee, J.R. / Lee, D.G. / Lee, G.C. / An, S.H. / Baek, Y.H. / Choi, Y.K. / Choo, H. / Park, H.Y. / Kim, G. / Jeon, B. / Shin, S.C. / Song, M.S.
History
DepositionMar 13, 2025Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Jan 21, 2026Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: 3C-like proteinase nsp5


Theoretical massNumber of molelcules
Total (without water)33,2361
Polymers33,2361
Non-polymers00
Water2,720151
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)114.089, 53.983, 44.456
Angle α, β, γ (deg.)90.00, 101.04, 90.00
Int Tables number5
Space group name H-MC121
Symmetry operation#1: x,y,z
#2: -x,y,-z
#3: x+1/2,y+1/2,z
#4: -x+1/2,y+1/2,-z
Components on special symmetry positions
IDModelComponents
11A-535-

HOH

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Components

#1: Protein 3C-like proteinase nsp5 / 3CL-PRO / 3CLp / Main protease / Mpro / Non-structural protein 5 / nsp5 / SARS coronavirus main proteinase


Mass: 33235.910 Da / Num. of mol.: 1 / Mutation: del23
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Severe acute respiratory syndrome coronavirus 2
Production host: Escherichia coli (E. coli)
References: UniProt: P0DTC1, SARS coronavirus main proteinase
#2: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 151 / Source method: isolated from a natural source / Formula: H2O
Has protein modificationN

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION / Number of used crystals: 1

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Sample preparation

CrystalDensity Matthews: 2.02 Å3/Da / Density % sol: 39.08 %
Crystal growTemperature: 298 K / Method: vapor diffusion, hanging drop / pH: 7.5
Details: 0.1 M HEPES (pH 7.5), 8% (v/v) ethylene glycol 10% (v/v) PEG 8000
PH range: 7.5 ~ 9.0

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Data collection

DiffractionMean temperature: 100 K / Serial crystal experiment: N
Diffraction sourceSource: SYNCHROTRON / Site: PAL/PLS / Beamline: 5C (4A) / Wavelength: 0.97933 Å
DetectorType: ADSC QUANTUM 210 / Detector: CCD / Date: Mar 15, 2024
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.97933 Å / Relative weight: 1
ReflectionResolution: 1.75→33.91 Å / Num. obs: 26882 / % possible obs: 96.2 % / Redundancy: 4.6 % / Biso Wilson estimate: 24.72 Å2 / CC1/2: 1 / Net I/σ(I): 21.3
Reflection shellResolution: 1.75→1.81 Å / Num. unique obs: 2159 / CC1/2: 1

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Processing

Software
NameVersionClassification
PHENIX(1.19.2_4158: ???)refinement
HKL-2000data reduction
HKL-2000data scaling
PHENIXphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 7NF5

7nf5


Resolution: 1.75→33.91 Å / SU ML: 0.22 / Cross valid method: FREE R-VALUE / σ(F): 1.42 / Phase error: 23.99 / Stereochemistry target values: ML
RfactorNum. reflection% reflection
Rfree0.2388 2000 7.73 %
Rwork0.1928 --
obs0.1963 25860 96.03 %
Solvent computationShrinkage radii: 0.9 Å / VDW probe radii: 1.11 Å / Solvent model: FLAT BULK SOLVENT MODEL
Refinement stepCycle: LAST / Resolution: 1.75→33.91 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2325 0 0 151 2476
Refine LS restraints
Refine-IDTypeDev idealNumber
X-RAY DIFFRACTIONf_bond_d0.0052376
X-RAY DIFFRACTIONf_angle_d0.8573230
X-RAY DIFFRACTIONf_dihedral_angle_d6.429321
X-RAY DIFFRACTIONf_chiral_restr0.053365
X-RAY DIFFRACTIONf_plane_restr0.007420
LS refinement shell
Resolution (Å)Rfactor RfreeNum. reflection RfreeRfactor RworkNum. reflection RworkRefine-ID% reflection obs (%)
1.75-1.790.31281140.26751353X-RAY DIFFRACTION77
1.79-1.840.34111300.26911556X-RAY DIFFRACTION88
1.84-1.90.26551380.27261646X-RAY DIFFRACTION94
1.9-1.960.29821420.24461707X-RAY DIFFRACTION97
1.96-2.030.29731460.22881729X-RAY DIFFRACTION97
2.03-2.110.25351440.21721712X-RAY DIFFRACTION98
2.11-2.20.26061460.22351747X-RAY DIFFRACTION98
2.2-2.320.25971450.21241739X-RAY DIFFRACTION99
2.32-2.470.22671480.21271754X-RAY DIFFRACTION99
2.47-2.660.27491460.2111749X-RAY DIFFRACTION99
2.66-2.920.24771500.20151778X-RAY DIFFRACTION100
2.92-3.340.2461490.18541783X-RAY DIFFRACTION100
3.35-4.210.21751480.16661777X-RAY DIFFRACTION100
4.21-33.910.18911540.15391830X-RAY DIFFRACTION100

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