5m4i

Complex structure of human protein kinase CK2 catalytic subunit with the inhibitor 4'-carboxy-6,8-chloro-flavonol (FLC21) crystallized under high-salt conditions

Method: X-RAY DIFFRACTION Dmax: 68.6 Å Quality: EXCELLENT

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 7FC 4-[6,8-bis(chloranyl)-3-oxidanyl-4-oxidanylidene-chromen-2-yl]benzoic acid × 1 CL CHLORIDE ION × 5 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;293 K;PROTEIN STOCK SOLUTION: 6 MG/ML CK2ALPHA1-335 IN 0.5 M NACL, 25 MM TRIS/HCL, PH 8.5; INHIBITOR STOCK SOLUTION: 10 MM INHIBITOR IN DMSO; PROTEIN/INHIBITOR COMPLEX SOLUTION: 90 MICROLITER PROTEIN STOCK SOLUTION + 10 MICROLITER INHIBITOR STOCK SOLUTION; RESERVOIR SOLUTION: 4.3 M NACL, 0.1 M SODIUM CITRATE, PH 5.2; DROP SOLUTION BEFORE EQULIBRATION: 0.5 MICROLITER PROTEIN/INHIBITOR COMPLEX SOLUTION + 0.5 MICROLITER RESERVOIR SOLUTION Resolution 2.22 Å R-free 0.228

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 1–335; 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 5m4i

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 5m4i
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2. Structure Basics 2. Structure Basics

Entry ID entry_id5m4i
Deposition date deposition_date2016-10-18
Structure title titleComplex structure of human protein kinase CK2 catalytic subunit with the inhibitor 4'-carboxy-6,8-chloro-flavonol (FLC21) crystallized under high-salt conditions
Keywords keywordsprotein kinase CK2, casein kinase 2, transferase; TRANSFERASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier21.88
Radius of gyration Rg (electron density) rg_electron20.64
Forward intensity I(0) i027341600.00
Molecular weight molecular_weight40107.0 kDa
Excluded volume excluded_volume50162 ų
Envelope volume envelope_volume58633 ų
Hydration-shell volume shell_volume23415 ų
Envelope diameter envelope_diameter69.5
Shell Rg shell_rg27.83
Envelope Rg envelope_rg20.97
Shape Rg shape_rg20.66
Total Rg total_rg21.51
Total atoms total_atoms2826
Residues n_residues331
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 dmax68.6
Rg (real space) rg_real21.78
Rg uncertainty (real space) rg_real_error0.34
I(0) (real space) i0_real2.7340e+07
I(0) uncertainty (real space) i0_real_error3.3490e+05
Rg (reciprocal space) rg_reciprocal21.80
I(0) (reciprocal space) i0_reciprocal27340000.0000
Solution quality estimate total_estimate0.9031
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary66.5
Skewness Skewness skewness0.239
Kurtosis Kurtosis kurtosis-0.379
Angular range angular_range— – 0.3650 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha7740000.0000
Real-space data points n_real_points68
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.913; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.999; Smooth: 0.997

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

7. Fold Classification (SCOP + CATH) 3 domains

SCOP 2.08 (1 domains)

Domain ID domain_idd5m4ia_
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

CATH v4.4 (2 domains)

Domain ID domain_id5m4iA01
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology510 — Transferase(Phosphotransferase); domain 1
Homologous superfamily homologous superfamily10 — Transferase(Phosphotransferase) domain 1
Domain ID domain_id5m4iA02
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology200 — Phosphorylase Kinase; domain 1
Homologous superfamily homologous superfamily20 — Phosphorylase Kinase; domain 1

8. Citations (4)

9. Files and Curves (10)