7z3u

Crystal structure of SARS-CoV-2 Main Protease after incubation with Sulfo-Calpeptin

Method: X-RAY DIFFRACTION Dmax: 90.3 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 heterocomplex Heteromer Protein × 4 PDB declaration: tetrameric(4) Consistent with protein copy count Chain A; UniProt 3264–3569 Chain B; UniProt 3264–3569 Non-standard monomer:Yes (specific site not provided by mmCIF) Calpetin × 2 DMS DIMETHYL SULFOXIDE × 3 NA SODIUM ION × 2 CL CHLORIDE ION × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION;291 K;Co-crystallization with the compound was achieved by equlibrating a 6.25 mg/ml protein solution in 20 mM HEPES buffer (pH 7.8) containing 1 mM DTT, 1mM EDTA, and 150 mM NaCl against a reservoir solution of 100 mM MIB buffer (2:3:3 molar ratio of malonic acid, imidazole, and boric acid), pH 7.5, containing 25% v/v PEG 1500 and 5% v/v DMSO. Prior to crystallization compound solutions in DMSO were dried onto the wells of SwissCI 96-well plates. To achieve reproducible crystal growth seeding was used. Crystals appeared within a few hours and reached their final size after 2 -3 days. Crystals were manually harvested and flash cooled in liquid nitrogen for subsequent X-ray diffraction data collection. Resolution 1.72 Å R-free 0.235

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 7z3u

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 7z3u
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2. Structure Basics 2. Structure Basics

Entry ID entry_id7z3u
Deposition date deposition_date2022-03-02
Structure title titleCrystal structure of SARS-CoV-2 Main Protease after incubation with Sulfo-Calpeptin
Keywords keywordsmain protease, MPro, cystein protease, drug development, drug target, peptide-like inhibitor, SARS-CoV-2, COVID-19, HYDROLASE; HYDROLASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier26.41
Radius of gyration Rg (electron density) rg_electron25.38
Forward intensity I(0) i075161200.00
Molecular weight molecular_weight67333.0 kDa
Excluded volume excluded_volume84021 ų
Envelope volume envelope_volume99145 ų
Hydration-shell volume shell_volume32200 ų
Envelope diameter envelope_diameter86.7
Shell Rg shell_rg33.00
Envelope Rg envelope_rg25.59
Shape Rg shape_rg25.37
Total Rg total_rg26.22
Total atoms total_atoms9307
Residues n_residues596
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 dmax90.3
Rg (real space) rg_real26.28
Rg uncertainty (real space) rg_real_error0.64
I(0) (real space) i0_real7.5160e+07
I(0) uncertainty (real space) i0_real_error1.1720e+06
Rg (reciprocal space) rg_reciprocal26.32
I(0) (reciprocal space) i0_reciprocal75160000.0000
Solution quality estimate total_estimate0.8025
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary34.6
Skewness Skewness skewness0.155
Kurtosis Kurtosis kurtosis-0.548
Angular range angular_range— – 0.3000 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha43150000.0000
Real-space data points n_real_points61
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.813; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.989; Smooth: 0.000

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (6)

8. Citations (2)

9. Files and Curves (10)