9hyh

Protein kinase CK2 catalytic subunit alpha (CSNK2A1 gene product) in complex with F2X-Entry screen fragment D02 and CX-4945 (Silmitasertib)

Method: X-RAY DIFFRACTION Dmax: 100.3 Å Quality: GOOD

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

Casein kinase II subunit alpha

Homo sapiens

UniProt P68400

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 1–335 Not recorded SY4 ~{N}-[5-azanyl-2,4-bis(fluoranyl)phenyl]propane-1-sulfonamide × 1 3NG 5-[(3-chlorophenyl)amino]benzo[c][2,6]naphthyridine-8-carboxylic acid × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;293 K;Reservoir: 200 mM Li2SO4, 100 mM Bis-Tris/HCl, pH 6.5, 35 % PEG 3350 Protein/Ligand mix: 5 mg per mL CK2alpha1-335, 100 mM ligand, 0.5 mM CX-4945, 10 % DMSO, prequilibrated Drop: 4 microliter protein/ligand plus 2 microliter reservoir Resolution 1.96 Å R-free 0.241
2 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain B; UniProt 1–335 Not recorded SY4 ~{N}-[5-azanyl-2,4-bis(fluoranyl)phenyl]propane-1-sulfonamide × 1 3NG 5-[(3-chlorophenyl)amino]benzo[c][2,6]naphthyridine-8-carboxylic acid × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;293 K;Reservoir: 200 mM Li2SO4, 100 mM Bis-Tris/HCl, pH 6.5, 35 % PEG 3350 Protein/Ligand mix: 5 mg per mL CK2alpha1-335, 100 mM ligand, 0.5 mM CX-4945, 10 % DMSO, prequilibrated Drop: 4 microliter protein/ligand plus 2 microliter reservoir Resolution 1.96 Å R-free 0.241

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.

313 other PDB entries and 447 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name CSK21_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 21–355; UniProt 1–335 Author chain B; PDBConstruct 21–355; UniProt 1–335

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 9hyh

P(r) Distance Distribution P(r) Distribution

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

Entry ID entry_id9hyh
Deposition date deposition_date2025-01-10
最后修订 last_revision2026-01-14
Structure title titleProtein kinase CK2 catalytic subunit alpha (CSNK2A1 gene product) in complex with F2X-Entry screen fragment D02 and CX-4945 (Silmitasertib)
Keywords keywordsProtein kinase CK2, kinase, fragment-based screening, ligand, casein kinase II, TRANSFERASE; TRANSFERASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier31.08
Radius of gyration Rg (electron density) rg_electron30.30
Forward intensity I(0) i0100409000.00
Molecular weight molecular_weight79873.0 kDa
Excluded volume excluded_volume100160 ų
Envelope volume envelope_volume126390 ų
Hydration-shell volume shell_volume35564 ų
Envelope diameter envelope_diameter103.6
Shell Rg shell_rg36.65
Envelope Rg envelope_rg30.05
Shape Rg shape_rg30.32
Total Rg total_rg30.84
Total atoms total_atoms5647
Residues n_residues663
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 dmax100.3
Rg (real space) rg_real31.14
Rg uncertainty (real space) rg_real_error0.84
I(0) (real space) i0_real1.0040e+08
I(0) uncertainty (real space) i0_real_error1.4590e+06
Rg (reciprocal space) rg_reciprocal31.12
I(0) (reciprocal space) i0_reciprocal100400000.0000
Solution quality estimate total_estimate0.8875
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary33.4
Skewness Skewness skewness0.368
Kurtosis Kurtosis kurtosis-0.537
Angular range angular_range— – 0.2550 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha29780000.0000
Real-space data points n_real_points52
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.890; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.948; Smooth: 0.916

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

8. Citations (1)

9. Files and Curves (10)