26ui

Dimeric C-terminal domain of Nucleocapsid protein of SARS-CoV-2.

Method: X-RAY DIFFRACTION Dmax: 59.3 Å Quality: GOOD

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

Nucleoprotein

Severe acute respiratory syndrome coronavirus 2

UniProt P0DTC9

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 254–364 Chain B; UniProt 254–364 Not recorded No other associated polymer X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 5;294 K;0.2M ammonium chloride, 0.1M sodium acetate pH 5, 20% PEG 6000 Resolution 1.85 Å R-free 0.218

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.

96 other PDB entries and 221 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name NCAP_SARS2
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–111; UniProt 254–364 Author chain B; PDBConstruct 1–111; UniProt 254–364

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 26ui

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 26ui
Download Download

2. Structure Basics 2. Structure Basics

Entry ID entry_id26ui
Deposition date deposition_date2026-05-15
最后修订 last_revision2026-05-27
Structure title titleDimeric C-terminal domain of Nucleocapsid protein of SARS-CoV-2.
Keywords keywordsN-CTD, Nucleocapsid protein, SARS-CoV-2, RNA BINDING PROTEIN; RNA BINDING PROTEIN
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier18.59
Radius of gyration Rg (electron density) rg_electron17.63
Forward intensity I(0) i011174500.00
Molecular weight molecular_weight24773.0 kDa
Excluded volume excluded_volume30972 ų
Envelope volume envelope_volume35667 ų
Hydration-shell volume shell_volume16953 ų
Envelope diameter envelope_diameter60.2
Shell Rg shell_rg23.58
Envelope Rg envelope_rg17.95
Shape Rg shape_rg17.60
Total Rg total_rg18.66
Total atoms total_atoms1752
Residues n_residues219
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 dmax59.3
Rg (real space) rg_real18.49
Rg uncertainty (real space) rg_real_error0.41
I(0) (real space) i0_real1.1170e+07
I(0) uncertainty (real space) i0_real_error1.3550e+05
Rg (reciprocal space) rg_reciprocal18.51
I(0) (reciprocal space) i0_reciprocal11170000.0000
Solution quality estimate total_estimate0.8184
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks3
Primary peak position r_peak_primary23.6
Skewness Skewness skewness0.155
Kurtosis Kurtosis kurtosis-0.476
Angular range angular_range— – 0.4300 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha1986000.0000
Real-space data points n_real_points74
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.879; Stabil: 0.999; Sysdev: 1.000; Positv: 1.000; Valcen: 0.999; Smooth: 0.000

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (2)

8. Citations (1)

9. Files and Curves (10)