23ml

Crystal structure of SARS-CoV-2 main protease Q189K mutant in complex with leritrelvir

Method: X-RAY DIFFRACTION Dmax: 82.5 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 Mutation:Q189K Leritrelvir bound form × 2 X-RAY DIFFRACTION mmCIF provides none of the parsed experimental conditions Resolution 2.16 Å R-free 0.253

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 23ml

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 23ml
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2. Structure Basics 2. Structure Basics

Entry ID entry_id23ml
Deposition date deposition_date2026-02-11
最后修订 last_revision2026-06-03
Structure title titleCrystal structure of SARS-CoV-2 main protease Q189K mutant in complex with leritrelvir
Keywords keywords;SARS-CoV-2, NSP5, main protease, coronavirus, protease inhibitor, alpha-ketoamide inhibitor, peptidomimetic inhibitor, 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_guinier26.32
Radius of gyration Rg (electron density) rg_electron25.29
Forward intensity I(0) i077214300.00
Molecular weight molecular_weight68507.0 kDa
Excluded volume excluded_volume85500 ų
Envelope volume envelope_volume100360 ų
Hydration-shell volume shell_volume32646 ų
Envelope diameter envelope_diameter87.2
Shell Rg shell_rg33.09
Envelope Rg envelope_rg25.44
Shape Rg shape_rg25.28
Total Rg total_rg26.15
Total atoms total_atoms4803
Residues n_residues612
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 dmax82.5
Rg (real space) rg_real26.19
Rg uncertainty (real space) rg_real_error0.51
I(0) (real space) i0_real7.7210e+07
I(0) uncertainty (real space) i0_real_error1.0720e+06
Rg (reciprocal space) rg_reciprocal26.24
I(0) (reciprocal space) i0_reciprocal77220000.0000
Solution quality estimate total_estimate0.9041
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary79.7
Skewness Skewness skewness0.157
Kurtosis Kurtosis kurtosis-0.536
Angular range angular_range— – 0.3000 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha36020000.0000
Real-space data points n_real_points61
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.927; Stabil: 0.999; Sysdev: 1.000; Positv: 1.000; Valcen: 0.999; Smooth: 0.972

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (3)

8. Citations (1)

9. Files and Curves (10)