9tta

Crystal Structure of S12 bound to Ck2a

Method: X-RAY DIFFRACTION Dmax: 70.9 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 2–329 Not recorded A1JXM 3-[2-[4-[(3-chloranyl-4-phenyl-phenyl)methylamino]butyl-[2-oxidanylidene-2-[2-(2-prop-2-ynoxyethoxy)ethylamino]ethyl]amino]ethanoylamino]benzoic acid × 1 ACT ACETATE ION × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 6.5;293 K;107mM Mes pH 6.5, 29% glycerol ethoxylate, 1 M ammonium acetate Resolution 1.91 Å R-free 0.284

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 448 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 1–328; UniProt 2–329

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 9tta

P(r) Distance Distribution P(r) Distribution

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

Entry ID entry_id9tta
Deposition date deposition_date2026-01-06
Structure title titleCrystal Structure of S12 bound to Ck2a
Keywords keywordsPROTACs, Hydrolase; HYDROLASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier21.45
Radius of gyration Rg (electron density) rg_electron20.43
Forward intensity I(0) i048466700.00
Molecular weight molecular_weight36916.0 kDa
Excluded volume excluded_volume36199 ų
Envelope volume envelope_volume57269 ų
Hydration-shell volume shell_volume23122 ų
Envelope diameter envelope_diameter72.0
Shell Rg shell_rg27.40
Envelope Rg envelope_rg20.71
Shape Rg shape_rg20.31
Total Rg total_rg21.30
Total atoms total_atoms2876
Residues n_residues327
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 dmax70.9
Rg (real space) rg_real21.36
Rg uncertainty (real space) rg_real_error0.41
I(0) (real space) i0_real4.8470e+07
I(0) uncertainty (real space) i0_real_error6.5060e+05
Rg (reciprocal space) rg_reciprocal21.37
I(0) (reciprocal space) i0_reciprocal48470000.0000
Solution quality estimate total_estimate0.8840
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary69.8
Skewness Skewness skewness0.243
Kurtosis Kurtosis kurtosis-0.379
Angular range angular_range— – 0.3700 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha13320000.0000
Real-space data points n_real_points69
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.843; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.999; Smooth: 0.962

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

8. Citations (1)

9. Files and Curves (10)