9i51

Crystal structure of the SARS-CoV-2 helicase NSP13 in complex with ADP

Method: X-RAY DIFFRACTION Dmax: 112.0 Å Quality: EXCELLENT

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

SARS-CoV-2 helicase NSP13

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 monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain A; UniProt 5325–5925 Not recorded ZN ZINC ION × 3 ADP ADENOSINE-5'-DIPHOSPHATE × 2 PO4 PHOSPHATE ION × 1 MPO 3[N-MORPHOLINO]PROPANE SULFONIC ACID × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 7.5;293 K;16 % Ethylene Glycol, 8 % PEG 8000, 0.05 M Na HEPES, 0.05 M MOPS, 0.03 M Sodium nitrate, 0.03 M Sodium phosphate dibasic, 0.03 M Ammonium sulfate, 9 % MPD Resolution 1.82 Å R-free 0.202
2 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain B; UniProt 5325–5925 Not recorded ZN ZINC ION × 3 ADP ADENOSINE-5'-DIPHOSPHATE × 1 PO4 PHOSPHATE ION × 2 MPO 3[N-MORPHOLINO]PROPANE SULFONIC ACID × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 7.5;293 K;16 % Ethylene Glycol, 8 % PEG 8000, 0.05 M Na HEPES, 0.05 M MOPS, 0.03 M Sodium nitrate, 0.03 M Sodium phosphate dibasic, 0.03 M Ammonium sulfate, 9 % MPD Resolution 1.82 Å R-free 0.202

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 4323 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 3–603; UniProt 5325–5925 Author chain B; PDBConstruct 3–603; UniProt 5325–5925

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 9i51

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 9i51
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2. Structure Basics 2. Structure Basics

Entry ID entry_id9i51
Deposition date deposition_date2025-01-27
Structure title titleCrystal structure of the SARS-CoV-2 helicase NSP13 in complex with ADP
Keywords keywordsNSP13, Helicase, SARS-CoV-2, Hydrolase; HYDROLASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier35.25
Radius of gyration Rg (electron density) rg_electron34.69
Forward intensity I(0) i0265125000.00
Molecular weight molecular_weight129790.0 kDa
Excluded volume excluded_volume161820 ų
Envelope volume envelope_volume212060 ų
Hydration-shell volume shell_volume51079 ų
Envelope diameter envelope_diameter115.5
Shell Rg shell_rg41.38
Envelope Rg envelope_rg33.87
Shape Rg shape_rg34.68
Total Rg total_rg35.21
Total atoms total_atoms9075
Residues n_residues1164
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 dmax112.0
Rg (real space) rg_real35.09
Rg uncertainty (real space) rg_real_error0.95
I(0) (real space) i0_real2.6510e+08
I(0) uncertainty (real space) i0_real_error4.4060e+06
Rg (reciprocal space) rg_reciprocal35.19
I(0) (reciprocal space) i0_reciprocal265100000.0000
Solution quality estimate total_estimate0.9025
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary44.8
Skewness Skewness skewness0.135
Kurtosis Kurtosis kurtosis-0.539
Angular range angular_range— – 0.2250 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha27760000.0000
Real-space data points n_real_points46
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.931; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.995; Smooth: 0.942

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (6)

8. Citations (1)

9. Files and Curves (10)