7a4b

Crystal structure of human protein kinase CK2alpha (CSNK2A1 gene product) in complex with the ATP-competitive inhibitor 5,6-dibromo-1H-triazolo[4,5-b]pyridine

Method: X-RAY DIFFRACTION Dmax: 98.9 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 1–335 Not recorded GOL GLYCEROL × 1 QXW 5,6-dibromo-1H-triazolo[4,5-b]pyridine × 1 SO4 SULFATE ION × 5 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;293.15 K;1 MIKROLITER OF THE CK2ALPHA/INHIBITOR MIXTURE (COMPOSITION: 7 MG/ML CK2ALPHA ENZYME, 1 MILLIMOLAR INHIBITOR, 10 % DIMETHYL SULFOXIDE, 450 MM NACL, 22.5 MM TRIS/HCL, PH 8.5) WAS MIXED WITH 1 MIKROLITER RESERVOIR SOLUTION (COMPOSITION: 25 % PEG3350, 0.2 M AMMONIUM SULPHATE, 0.1 M BIS-TRIS BUFFER, PH 5.5) FOLLOWED BY VAPOUR DIFFUSION EQUILIBRATION AGAINST THE RESERVOIR SOLUTION. Resolution 2.06 Å R-free 0.223
2 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain B; UniProt 1–335 Not recorded GOL GLYCEROL × 1 QXW 5,6-dibromo-1H-triazolo[4,5-b]pyridine × 1 SO4 SULFATE ION × 4 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;293.15 K;1 MIKROLITER OF THE CK2ALPHA/INHIBITOR MIXTURE (COMPOSITION: 7 MG/ML CK2ALPHA ENZYME, 1 MILLIMOLAR INHIBITOR, 10 % DIMETHYL SULFOXIDE, 450 MM NACL, 22.5 MM TRIS/HCL, PH 8.5) WAS MIXED WITH 1 MIKROLITER RESERVOIR SOLUTION (COMPOSITION: 25 % PEG3350, 0.2 M AMMONIUM SULPHATE, 0.1 M BIS-TRIS BUFFER, PH 5.5) FOLLOWED BY VAPOUR DIFFUSION EQUILIBRATION AGAINST THE RESERVOIR SOLUTION. Resolution 2.06 Å R-free 0.223

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 1–335; UniProt 1–335 Author chain B; PDBConstruct 1–335; 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 7a4b

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 7a4b
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2. Structure Basics 2. Structure Basics

Entry ID entry_id7a4b
Deposition date deposition_date2020-08-19
Structure title titleCrystal structure of human protein kinase CK2alpha (CSNK2A1 gene product) in complex with the ATP-competitive inhibitor 5,6-dibromo-1H-triazolo[4,5-b]pyridine
Keywords keywordsprotein kinase CK2, casein kinase 2, ATP-competitive inhibitor, TRANSFERASE; TRANSFERASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier31.04
Radius of gyration Rg (electron density) rg_electron30.38
Forward intensity I(0) i0108946000.00
Molecular weight molecular_weight81066.0 kDa
Excluded volume excluded_volume100720 ų
Envelope volume envelope_volume126750 ų
Hydration-shell volume shell_volume35610 ų
Envelope diameter envelope_diameter104.5
Shell Rg shell_rg36.60
Envelope Rg envelope_rg30.17
Shape Rg shape_rg30.40
Total Rg total_rg30.87
Total atoms total_atoms5695
Residues n_residues665
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 dmax98.9
Rg (real space) rg_real31.12
Rg uncertainty (real space) rg_real_error0.69
I(0) (real space) i0_real1.0890e+08
I(0) uncertainty (real space) i0_real_error1.5810e+06
Rg (reciprocal space) rg_reciprocal31.09
I(0) (reciprocal space) i0_reciprocal108900000.0000
Solution quality estimate total_estimate0.8872
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary33.0
Skewness Skewness skewness0.391
Kurtosis Kurtosis kurtosis-0.493
Angular range angular_range— – 0.2550 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha30650000.0000
Real-space data points n_real_points52
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.904; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.954; Smooth: 0.865

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (5)

7. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd7a4ba_
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.144 — Protein kinase-like (PK-like)
Superfamily Superfamily superfamilyd.144.1 — Protein kinase-like (PK-like)
Family Family familyd.144.1.7 — Protein kinases, catalytic subunit
Domain ID domain_idd7a4bb_
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.144 — Protein kinase-like (PK-like)
Superfamily Superfamily superfamilyd.144.1 — Protein kinase-like (PK-like)
Family Family familyd.144.1.7 — Protein kinases, catalytic subunit

8. Citations (4)

9. Files and Curves (10)