9q9d

Protein kinase CK2 catalytic subunit alpha' (CSNK2A2 gene product) in complex with F2X-Entry screen fragment D06 and CX-4945 (Silmitasertib)

Method: X-RAY DIFFRACTION Dmax: 68.7 Å Quality: GOOD

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

;Casein kinase II subunit alpha' ;

Homo sapiens

UniProt P19784

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 1–350 Mutation:C336S 3NG 5-[(3-chlorophenyl)amino]benzo[c][2,6]naphthyridine-8-carboxylic acid × 1 R9G (3-methoxyphenyl)(pyrrolidin-1-yl)methanone × 1 CL CHLORIDE ION × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;293 K;Original reservoir: 900 mM LiCl, 250 mM Tris HCl, pH 8.5, 28 % PEG 6000 Protein mixture: 5 mg/mL CK2alpha Prime in 500 mM NaCl, 25 mM Tris HCl, pH 8.5, 1 mM CX-4945 and 5 % DMSO Drop: 2 microliter reservoir, 4 microliter protein/CX-4945 mix Crystal optimization by micro- and macroseeding Ligand soaking: 100 mM ligand in 900 mM LiCl, 250 mM Tris HCl, pH 8.5, 28 % PEG 6000, 5 % DMSO Equilibration for 24 h against new reservoir: 900 mM LiCl, 250 mM Tris HCl, pH 8.5, saturated PEG 6000 Resolution 0.89 Å R-free 0.159

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.

55 other PDB entries and 70 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name CSK22_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 21–370; UniProt 1–350

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 9q9d

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 9q9d
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2. Structure Basics 2. Structure Basics

Entry ID entry_id9q9d
Deposition date deposition_date2025-02-26
最后修订 last_revision2026-01-14
Structure title titleProtein kinase CK2 catalytic subunit alpha' (CSNK2A2 gene product) in complex with F2X-Entry screen fragment D06 and CX-4945 (Silmitasertib)
Keywords keywordsfragment-based screening, protein kinase CK2, 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_guinier21.61
Radius of gyration Rg (electron density) rg_electron20.44
Forward intensity I(0) i025510400.00
Molecular weight molecular_weight39559.0 kDa
Excluded volume excluded_volume49856 ų
Envelope volume envelope_volume56799 ų
Hydration-shell volume shell_volume22979 ų
Envelope diameter envelope_diameter70.3
Shell Rg shell_rg27.43
Envelope Rg envelope_rg20.70
Shape Rg shape_rg20.45
Total Rg total_rg21.33
Total atoms total_atoms5548
Residues n_residues326
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 dmax68.7
Rg (real space) rg_real21.52
Rg uncertainty (real space) rg_real_error0.46
I(0) (real space) i0_real2.5510e+07
I(0) uncertainty (real space) i0_real_error3.2770e+05
Rg (reciprocal space) rg_reciprocal21.54
I(0) (reciprocal space) i0_reciprocal25510000.0000
Solution quality estimate total_estimate0.8184
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary26.3
Skewness Skewness skewness0.239
Kurtosis Kurtosis kurtosis-0.374
Angular range angular_range— – 0.3700 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha8034000.0000
Real-space data points n_real_points69
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: 1.000; Smooth: 0.000

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (5)

8. Citations (1)

9. Files and Curves (10)