9sam

Crystal structure of SARS-CoV-2 NSP14 in complex with compound 26

Method: X-RAY DIFFRACTION Dmax: 98.8 Å Quality: EXCELLENT

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

Guanine-N7 methyltransferase nsp14

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 5926–6450 Not recorded ZN ZINC ION × 3 IMD IMIDAZOLE × 1 A1JM1 (1~{R},2~{S},3~{R},5~{S})-3-(6-aminopurin-9-yl)-5-(1,3-benzothiazol-2-ylsulfanylmethyl)cyclopentane-1,2-diol × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;298 K;7% isopropanol and 0.1 M imidazole, pH 7.75 Resolution 2.54 Å R-free 0.229
2 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain B; UniProt 5926–6450 Not recorded ZN ZINC ION × 4 IMD IMIDAZOLE × 3 A1JM1 (1~{R},2~{S},3~{R},5~{S})-3-(6-aminopurin-9-yl)-5-(1,3-benzothiazol-2-ylsulfanylmethyl)cyclopentane-1,2-diol × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;298 K;7% isopropanol and 0.1 M imidazole, pH 7.75 Resolution 2.54 Å R-free 0.229

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 1–525; UniProt 5926–6450 Author chain B; PDBConstruct 1–525; UniProt 5926–6450

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 9sam

P(r) Distance Distribution P(r) Distribution

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

Entry ID entry_id9sam
Deposition date deposition_date2025-08-07
Structure title titleCrystal structure of SARS-CoV-2 NSP14 in complex with compound 26
Keywords keywordsNSP14, SARS-CoV-2 NSP14, 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_guinier32.15
Radius of gyration Rg (electron density) rg_electron31.43
Forward intensity I(0) i0299235000.00
Molecular weight molecular_weight93118.0 kDa
Excluded volume excluded_volume90281 ų
Envelope volume envelope_volume161000 ų
Hydration-shell volume shell_volume41900 ų
Envelope diameter envelope_diameter104.6
Shell Rg shell_rg39.13
Envelope Rg envelope_rg31.07
Shape Rg shape_rg31.40
Total Rg total_rg31.96
Total atoms total_atoms6996
Residues n_residues885
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 dmax98.8
Rg (real space) rg_real31.96
Rg uncertainty (real space) rg_real_error0.54
I(0) (real space) i0_real2.9920e+08
I(0) uncertainty (real space) i0_real_error4.2730e+06
Rg (reciprocal space) rg_reciprocal32.05
I(0) (reciprocal space) i0_reciprocal299300000.0000
Solution quality estimate total_estimate0.9097
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary42.3
Skewness Skewness skewness0.087
Kurtosis Kurtosis kurtosis-0.645
Angular range angular_range— – 0.2450 −1
Current regularization parameter α current_alpha0.0001
Highest regularization parameter α highest_alpha28780000.0000
Real-space data points n_real_points50
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.958; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.996; Smooth: 0.953

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (5)

8. Citations (1)

9. Files and Curves (10)