7b8i

Tetragonal structure of human protein kinase CK2 catalytic subunit in complex with a heparin oligo saccharide

Method: X-RAY DIFFRACTION Dmax: 102.1 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 Other combination Monomer Protein × 1 其他Polymer 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain A; UniProt 1–335 Not recorded ;2-deoxy-6-O-sulfo-2-(sulfoamino)-alpha-D-glucopyranose-(1-4)-2-O-sulfo-alpha-L-idopyranuronic acid-(1-4)-2-deoxy-6-O-sulfo-2-(sulfoamino)-alpha-D-glucopyranose-(1-4)-2-O-sulfo-alpha-L-idopyranuronic acid-(1-4)-2-deoxy-6-O-sulfo-2-(sulfoamino)-alpha-D-glucopyranose-(1-4)-2-O-sulfo-alpha-L-idopyranuronic acid-(1-4)-2-deoxy-6-O-sulfo-2-(sulfoamino)-alpha-D-glucopyranose-(1-4)-2-O-sulfo-alpha-L-idopyranuronic acid ; × 1 GOL GLYCEROL × 1 SO4 SULFATE ION × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;293.15 K;Prior to crystallization, the enzyme was incubated with heparin decasaccharide; the composition of this preincubation solution was 5 mg/ml CK2alpha1-335, 1.4 mM Heparin decasaccharide, 340 mM NaCl, 25 mM Tris/HCl, pH 8.5. 4 microliter of this enzyme/heparin mixture was mixed with 1 microliter reservoir solution. The composition of the reservoir solution was 32 % (w/v) PEG4000, 0.2 M Lithium sulfate, 0.1 M Tris/HCl, pH 7.5. As a preparation of X-ray diffraction data collection, the crystals were transferred to a cryo solution composed of 32 % (w/v) PEG4000, 10 % (v/v) glycerol, 0.2 M lithium sulfate, 0.5 mM Heparin decasaccharide, 0.1 M Tris/HCl, pH 7.5. Resolution 2.55 Å R-free 0.240
2 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain B; UniProt 1–335 Not recorded SO4 SULFATE ION × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;293.15 K;Prior to crystallization, the enzyme was incubated with heparin decasaccharide; the composition of this preincubation solution was 5 mg/ml CK2alpha1-335, 1.4 mM Heparin decasaccharide, 340 mM NaCl, 25 mM Tris/HCl, pH 8.5. 4 microliter of this enzyme/heparin mixture was mixed with 1 microliter reservoir solution. The composition of the reservoir solution was 32 % (w/v) PEG4000, 0.2 M Lithium sulfate, 0.1 M Tris/HCl, pH 7.5. As a preparation of X-ray diffraction data collection, the crystals were transferred to a cryo solution composed of 32 % (w/v) PEG4000, 10 % (v/v) glycerol, 0.2 M lithium sulfate, 0.5 mM Heparin decasaccharide, 0.1 M Tris/HCl, pH 7.5. Resolution 2.55 Å R-free 0.240

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 7b8i

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 7b8i
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2. Structure Basics 2. Structure Basics

Entry ID entry_id7b8i
Deposition date deposition_date2020-12-12
Structure title titleTetragonal structure of human protein kinase CK2 catalytic subunit in complex with a heparin oligo saccharide
Keywords keywordsprotein kinase CK2, casein kinase 2, catalytic subunit CK2alpha, heparin, TRANSFERASE; TRANSFERASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier31.95
Radius of gyration Rg (electron density) rg_electron31.44
Forward intensity I(0) i0110470000.00
Molecular weight molecular_weight82046.0 kDa
Excluded volume excluded_volume101970 ų
Envelope volume envelope_volume131230 ų
Hydration-shell volume shell_volume35536 ų
Envelope diameter envelope_diameter109.8
Shell Rg shell_rg37.92
Envelope Rg envelope_rg30.83
Shape Rg shape_rg31.50
Total Rg total_rg31.79
Total atoms total_atoms5770
Residues n_residues664
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 dmax102.1
Rg (real space) rg_real32.02
Rg uncertainty (real space) rg_real_error0.72
I(0) (real space) i0_real1.1050e+08
I(0) uncertainty (real space) i0_real_error1.8020e+06
Rg (reciprocal space) rg_reciprocal31.99
I(0) (reciprocal space) i0_reciprocal110500000.0000
Solution quality estimate total_estimate0.8960
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary32.7
Skewness Skewness skewness0.343
Kurtosis Kurtosis kurtosis-0.590
Angular range angular_range— – 0.2500 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha25840000.0000
Real-space data points n_real_points51
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.916; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.975; Smooth: 0.921

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_idd7b8ia_
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_idd7b8ib_
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 (1)

9. Files and Curves (10)