3qa0

Crystal structure of the apo-form of human CK2 alpha at pH 6.5

Method: X-RAY DIFFRACTION Dmax: 100.0 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 1–336 Fragment:UNP residues 1-336 SO4 SULFATE ION × 3 EDO 1,2-ETHANEDIOL × 3 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 6.5;293 K;20% PEG 5000 MME, 0.2M ammonium sulfate, 0.1M Mes pH 6.5, vapor diffusion, sitting drop, temperature 293K Resolution 2.50 Å R-free 0.249
2 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain B; UniProt 1–336 Fragment:UNP residues 1-336 SO4 SULFATE ION × 4 EDO 1,2-ETHANEDIOL × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 6.5;293 K;20% PEG 5000 MME, 0.2M ammonium sulfate, 0.1M Mes pH 6.5, vapor diffusion, sitting drop, temperature 293K Resolution 2.50 Å R-free 0.249

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 1–336; UniProt 1–336 Author chain B; PDBConstruct 1–336; UniProt 1–336

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 3qa0

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 3qa0
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2. Structure Basics 2. Structure Basics

Entry ID entry_id3qa0
Deposition date deposition_date2011-01-10
Structure title titleCrystal structure of the apo-form of human CK2 alpha at pH 6.5
Keywords keywordsprotein kinase, apo-form, TRANSFERASE; TRANSFERASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier31.00
Radius of gyration Rg (electron density) rg_electron30.25
Forward intensity I(0) i0102868000.00
Molecular weight molecular_weight79857.0 kDa
Excluded volume excluded_volume99760 ų
Envelope volume envelope_volume125620 ų
Hydration-shell volume shell_volume35438 ų
Envelope diameter envelope_diameter103.8
Shell Rg shell_rg36.66
Envelope Rg envelope_rg29.99
Shape Rg shape_rg30.27
Total Rg total_rg30.78
Total atoms total_atoms5631
Residues n_residues660
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 dmax100.0
Rg (real space) rg_real31.07
Rg uncertainty (real space) rg_real_error0.64
I(0) (real space) i0_real1.0290e+08
I(0) uncertainty (real space) i0_real_error1.5800e+06
Rg (reciprocal space) rg_reciprocal31.05
I(0) (reciprocal space) i0_reciprocal102900000.0000
Solution quality estimate total_estimate0.8853
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks0
Primary peak position r_peak_primary
Skewness Skewness skewness0.376
Kurtosis Kurtosis kurtosis-0.530
Angular range angular_range— – 0.2550 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha31800000.0000
Real-space data points n_real_points52
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.888; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.945; Smooth: 0.894

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

7. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd3qa0a_
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_idd3qa0b_
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 (4 domains)

Domain ID domain_id3qa0A01
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_id3qa0A02
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology200 — Phosphorylase Kinase; domain 1
Homologous superfamily homologous superfamily20 — Phosphorylase Kinase; domain 1
Domain ID domain_id3qa0B01
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_id3qa0B02
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 (1)

9. Files and Curves (10)