9xyx

Crystal Structure of SARS-CoV-2 Main Protease (Mpro) T169S Mutant

Method: X-RAY DIFFRACTION Dmax: 75.4 Å Quality: GOOD

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 Mutation:T169S No other associated polymer X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;293.15 K;25% PEG 3350, 0.1M Potassium/Sodium Tartrate, 0.005M Magnesium Chloride Resolution 2.67 Å R-free 0.260

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

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 9xyx

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 9xyx
Download Download

2. Structure Basics 2. Structure Basics

Entry ID entry_id9xyx
Deposition date deposition_date2025-08-26
Structure title titleCrystal Structure of SARS-CoV-2 Main Protease (Mpro) T169S Mutant
Keywords keywordsProtease, SARS-CoV-2, Mpro, COVID-19, VIRAL PROTEIN, HYDROLASE; HYDROLASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier22.40
Radius of gyration Rg (electron density) rg_electron21.67
Forward intensity I(0) i020115000.00
Molecular weight molecular_weight33634.0 kDa
Excluded volume excluded_volume41915 ų
Envelope volume envelope_volume49340 ų
Hydration-shell volume shell_volume19873 ų
Envelope diameter envelope_diameter76.0
Shell Rg shell_rg27.34
Envelope Rg envelope_rg21.86
Shape Rg shape_rg21.66
Total Rg total_rg22.47
Total atoms total_atoms2357
Residues n_residues305
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 dmax75.4
Rg (real space) rg_real22.50
Rg uncertainty (real space) rg_real_error0.61
I(0) (real space) i0_real2.0120e+07
I(0) uncertainty (real space) i0_real_error2.9520e+05
Rg (reciprocal space) rg_reciprocal22.48
I(0) (reciprocal space) i0_reciprocal20110000.0000
Solution quality estimate total_estimate0.8610
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary22.9
Skewness Skewness skewness0.466
Kurtosis Kurtosis kurtosis-0.363
Angular range angular_range— – 0.3550 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha8070000.0000
Real-space data points n_real_points67
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.778; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.923; Smooth: 0.932

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (2)

8. Citations (1)

9. Files and Curves (10)