9qd5

Crystal structure of SARS-CoV-2 main protease in complex with RS222C

Method: X-RAY DIFFRACTION Dmax: 82.0 Å Quality: EXCELLENT

1. Protein Identity and Related Structures Protein Identity & Related Structures

3C-like proteinase nsp5

Severe acute respiratory syndrome coronavirus 2

UniProt P0DTD1

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein homooligomer Homooligomer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain A; UniProt 3264–3569 Chain B; UniProt 3264–3569 Fragment:NONE DMS DIMETHYL SULFOXIDE × 1 NA SODIUM ION × 2 A1I6A 2-chloranyl-~{N}-[(~{R})-[1-(phenylmethyl)-1,2,3,4-tetrazol-5-yl]-pyridin-3-yl-methyl]-~{N}-(4-phenylphenyl)ethanamide × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 6.7;293 K;100 mM MES pH 6.7, 11% PEG 4000 and 5% DMSO 150 nL Protein (5 mg/mL), 150 nL Crystallisation condition, 50 nL seed stock (1:250) Resolution 2.04 Å R-free 0.232

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

3350 other PDB entries and 4324 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name R1AB_SARS2
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–306; UniProt 3264–3569 Author chain B; PDBConstruct 1–306; UniProt 3264–3569

The page prioritizes protein identity, the current assembly, associated components, oligomeric state and cross-PDB links. Chain mapping and sequence ranges are retained as data evidence. Internal IDs, import timestamps and assembly operation expressions are maintenance fields and are not shown here.

SAXS scattering curve SAXS Profile

SAXS profile for 9qd5

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 9qd5
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2. Structure Basics 2. Structure Basics

Entry ID entry_id9qd5
Deposition date deposition_date2025-03-06
Structure title titleCrystal structure of SARS-CoV-2 main protease in complex with RS222C
Keywords keywordsProtease, Sars-Cov-2, 3CLPro, Complex, Covalent, VIRAL PROTEIN; VIRAL PROTEIN
Experimental Method methodX-RAY DIFFRACTION

3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier26.25
Radius of gyration Rg (electron density) rg_electron25.39
Forward intensity I(0) i0137577000.00
Molecular weight molecular_weight61714.0 kDa
Excluded volume excluded_volume59549 ų
Envelope volume envelope_volume98703 ų
Hydration-shell volume shell_volume32098 ų
Envelope diameter envelope_diameter87.7
Shell Rg shell_rg32.99
Envelope Rg envelope_rg25.52
Shape Rg shape_rg25.38
Total Rg total_rg25.98
Total atoms total_atoms4645
Residues n_residues595
Spherical-harmonic order n_harmonics20
q range q_range— – 0.5000 −1
Data points n_points101
Shell type shell_typedirectional
Solvent electron density solvent_density0.3340 e/ų
Shell contrast contrast_shell0.0300 e/ų
CRYSOL version crysol_version4.1.3

4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax82.0
Rg (real space) rg_real26.11
Rg uncertainty (real space) rg_real_error0.47
I(0) (real space) i0_real1.3760e+08
I(0) uncertainty (real space) i0_real_error1.7930e+06
Rg (reciprocal space) rg_reciprocal26.16
I(0) (reciprocal space) i0_reciprocal137600000.0000
Solution quality estimate total_estimate0.9047
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary35.5
Skewness Skewness skewness0.147
Kurtosis Kurtosis kurtosis-0.558
Angular range angular_range— – 0.3000 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha44310000.0000
Real-space data points n_real_points61
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.932; Stabil: 0.998; Sysdev: 1.000; Positv: 1.000; Valcen: 0.999; Smooth: 0.967

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (5)

8. Citations (1)

9. Files and Curves (10)