7aqi

Structure of SARS-CoV-2 Main Protease bound to Ifenprodil

Method: X-RAY DIFFRACTION Dmax: 81.7 Å Quality: REASONABLE

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

3C-like proteinase

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 Not recorded QEL 4-[(1R,2S)-2-(4-benzylpiperidin-1-yl)-1-hydroxypropyl]phenol × 2 DMS DIMETHYL SULFOXIDE × 4 IMD IMIDAZOLE × 4 X-RAY DIFFRACTION X-ray crystallization conditions:COUNTER-DIFFUSION;pH 7.5;291 K;Co-crystallization with the compounds 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. Resolution 1.70 Å R-free 0.266

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 7aqi

P(r) Distance Distribution P(r) Distribution

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

Entry ID entry_id7aqi
Deposition date deposition_date2020-10-21
Structure title titleStructure of SARS-CoV-2 Main Protease bound to Ifenprodil
Keywords keywordsSARS-CoV-2, Main protease, anti-viral, Covid-19 pandemic, HYDROLASE; HYDROLASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier22.49
Radius of gyration Rg (electron density) rg_electron21.73
Forward intensity I(0) i020621200.00
Molecular weight molecular_weight34070.0 kDa
Excluded volume excluded_volume42436 ų
Envelope volume envelope_volume50369 ų
Hydration-shell volume shell_volume20158 ų
Envelope diameter envelope_diameter78.8
Shell Rg shell_rg27.62
Envelope Rg envelope_rg21.98
Shape Rg shape_rg21.71
Total Rg total_rg22.57
Total atoms total_atoms2385
Residues n_residues306
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 dmax81.7
Rg (real space) rg_real23.72
Rg uncertainty (real space) rg_real_error0.31
I(0) (real space) i0_real2.0740e+07
I(0) uncertainty (real space) i0_real_error2.6480e+05
Rg (reciprocal space) rg_reciprocal22.56
I(0) (reciprocal space) i0_reciprocal20620000.0000
Solution quality estimate total_estimate0.6170
Solution quality rating solution_quality REASONABLE a REASONABLE solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary22.3
Skewness Skewness skewness0.592
Kurtosis Kurtosis kurtosis-0.119
Angular range angular_range— – 0.3550 −1
Current regularization parameter α current_alpha4.8460
Highest regularization parameter α highest_alpha9004000.0000
Real-space data points n_real_points67
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.675; Stabil: 0.869; Sysdev: 0.000; Positv: 1.000; Valcen: 0.804; Smooth: 0.636

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (5)

7. Fold Classification (SCOP + CATH) 1 domains

SCOP 2.08 (1 domains)

Domain ID domain_idd7aqia_
Class classb — All beta proteins
Fold Fold foldb.47 — Trypsin-like serine proteases
Superfamily Superfamily superfamilyb.47.1 — Trypsin-like serine proteases
Family Family familyb.47.1.4 — Viral cysteine protease of trypsin fold

8. Citations (2)

9. Files and Curves (10)