9t2i

SP100 nuclear antigen with crystallization epitope mutations N816D:T820R

Method: X-RAY DIFFRACTION Dmax: 80.7 Å Quality: EXCELLENT

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

Isoform Sp100-C of Nuclear autoantigen Sp-100

Homo sapiens

UniProt P23497

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 701–878 Not recorded ZN ZINC ION × 3 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 6.5;277.15 K;0.2M ammonium sulfate 25% PEG3350 0.1M bis-tris pH 6.5 Resolution 1.35 Å R-free 0.185
2 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain B; UniProt 701–878 Not recorded ZN ZINC ION × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 6.5;277.15 K;0.2M ammonium sulfate 25% PEG3350 0.1M bis-tris pH 6.5 Resolution 1.35 Å R-free 0.185

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.

122 other PDB entries and 241 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name SP100_HUMAN
Isoform P23497-4
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–178; UniProt 701–878 Author chain B; PDBConstruct 1–178; UniProt 701–878

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 9t2i

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 9t2i
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2. Structure Basics 2. Structure Basics

Entry ID entry_id9t2i
Deposition date deposition_date2025-10-22
最后修订 last_revision2026-02-25
Structure title titleSP100 nuclear antigen with crystallization epitope mutations N816D:T820R
Keywords keywordsCrystal epitopes, TRANSCRIPTION; TRANSCRIPTION
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier25.63
Radius of gyration Rg (electron density) rg_electron24.64
Forward intensity I(0) i031444400.00
Molecular weight molecular_weight41316.0 kDa
Excluded volume excluded_volume50918 ų
Envelope volume envelope_volume66524 ų
Hydration-shell volume shell_volume23159 ų
Envelope diameter envelope_diameter83.5
Shell Rg shell_rg31.03
Envelope Rg envelope_rg24.59
Shape Rg shape_rg24.62
Total Rg total_rg25.44
Total atoms total_atoms5573
Residues n_residues343
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 dmax80.7
Rg (real space) rg_real25.64
Rg uncertainty (real space) rg_real_error0.58
I(0) (real space) i0_real3.1440e+07
I(0) uncertainty (real space) i0_real_error4.3090e+05
Rg (reciprocal space) rg_reciprocal25.64
I(0) (reciprocal space) i0_reciprocal31440000.0000
Solution quality estimate total_estimate0.9084
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary27.3
Skewness Skewness skewness0.294
Kurtosis Kurtosis kurtosis-0.579
Angular range angular_range— – 0.3100 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha3197000.0000
Real-space data points n_real_points63
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.945; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.983; Smooth: 0.986

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (3)

8. Citations (1)

9. Files and Curves (10)