9at1

Crystal structure of SARS-CoV-2 3CL protease in complex with a methylcyclohexyl 2-pyrrolidone inhibitor (R-enantiomer)

Method: X-RAY DIFFRACTION Dmax: 82.3 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 3264–3567 Chain B; UniProt 3264–3567 Fragment:UNP residues 3264-3567 A1AGZ (1S,2S)-2-{[N-({[(2R)-1-(cyclohexylmethyl)-5-oxopyrrolidin-2-yl]methoxy}carbonyl)-L-leucyl]amino}-1-hydroxy-3-[(3S)-2-oxopyrrolidin-3-yl]propane-1-sulfonic acid × 2 PG4 TETRAETHYLENE GLYCOL × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 7;291 K;20% w/v PEG3350, 100 mM Bis-Tris propane, pH 7.0, 200 mM sodium formate Resolution 1.90 Å R-free 0.221

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 5–308; UniProt 3264–3567 Author chain B; PDBConstruct 5–308; UniProt 3264–3567

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 9at1

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 9at1
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2. Structure Basics 2. Structure Basics

Entry ID entry_id9at1
Deposition date deposition_date2024-02-26
Structure title titleCrystal structure of SARS-CoV-2 3CL protease in complex with a methylcyclohexyl 2-pyrrolidone inhibitor (R-enantiomer)
Keywords keywords;protease, Severe Acute Respiratory Syndrome Coronavirus 2, SARS-COV-2 3CL protease inhibitors, Covid-19, viral protein, HYDROLASE-INHIBITOR complex ;; HYDROLASE/INHIBITOR
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier26.54
Radius of gyration Rg (electron density) rg_electron25.59
Forward intensity I(0) i071858300.00
Molecular weight molecular_weight66012.0 kDa
Excluded volume excluded_volume82473 ų
Envelope volume envelope_volume97630 ų
Hydration-shell volume shell_volume31618 ų
Envelope diameter envelope_diameter86.4
Shell Rg shell_rg33.00
Envelope Rg envelope_rg25.64
Shape Rg shape_rg25.58
Total Rg total_rg26.41
Total atoms total_atoms4627
Residues n_residues600
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 dmax82.3
Rg (real space) rg_real26.40
Rg uncertainty (real space) rg_real_error0.55
I(0) (real space) i0_real7.1860e+07
I(0) uncertainty (real space) i0_real_error1.0750e+06
Rg (reciprocal space) rg_reciprocal26.45
I(0) (reciprocal space) i0_reciprocal71860000.0000
Solution quality estimate total_estimate0.9081
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary37.0
Skewness Skewness skewness0.118
Kurtosis Kurtosis kurtosis-0.595
Angular range angular_range— – 0.3000 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha40790000.0000
Real-space data points n_real_points61
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.939; Stabil: 0.999; Sysdev: 1.000; Positv: 1.000; Valcen: 0.999; Smooth: 0.989

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

8. Citations (1)

9. Files and Curves (10)