8pp9

Human inositol 1,4,5-trisphosphate 3-kinase A (IP3K) catalytic domain in complex with scyllo-inositol 1,2,3,5-tetrakisphosphate/ADP/Mn

Method: X-RAY DIFFRACTION Dmax: 86.2 Å Quality: GOOD

1. Protein Identity and Related Structures Protein Identity & Related Structures

Inositol-trisphosphate 3-kinase A

Homo sapiens

UniProt P23677

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 188–461 Not recorded 4IM scyllo-inositol 1,2,3,5-tetrakisphosphate × 1 ADP ADENOSINE-5'-DIPHOSPHATE × 1 SO4 SULFATE ION × 3 MN MANGANESE (II) ION × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 8.5;291 K;0.81 M sodium citrate, 0.1M Tris pH 8.5 and 0.1 M NaCl. Protein:precipitant ratio 1:1. Protein concentration: 17 mg/ml. Protein buffer: 20 mM Tris pH 7.5, 50 mM ammonium sulfate and 2 mM DTT. Soaking 2h with 1.5 M lithium sulfate, 0.1 M Tris pH 8.5, 5 mM ligand, 3 mM ADP and 3 mM MnCl2. Resolution 1.73 Å R-free 0.210
2 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain B; UniProt 188–461 Not recorded 4IM scyllo-inositol 1,2,3,5-tetrakisphosphate × 1 ADP ADENOSINE-5'-DIPHOSPHATE × 1 SO4 SULFATE ION × 3 MN MANGANESE (II) ION × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 8.5;291 K;0.81 M sodium citrate, 0.1M Tris pH 8.5 and 0.1 M NaCl. Protein:precipitant ratio 1:1. Protein concentration: 17 mg/ml. Protein buffer: 20 mM Tris pH 7.5, 50 mM ammonium sulfate and 2 mM DTT. Soaking 2h with 1.5 M lithium sulfate, 0.1 M Tris pH 8.5, 5 mM ligand, 3 mM ADP and 3 mM MnCl2. Resolution 1.73 Å R-free 0.210

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.

16 other PDB entries and 31 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name IP3KA_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 6–279; UniProt 188–461 Author chain B; PDBConstruct 6–279; UniProt 188–461

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 8pp9

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 8pp9
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2. Structure Basics 2. Structure Basics

Entry ID entry_id8pp9
Deposition date deposition_date2023-07-07
Structure title titleHuman inositol 1,4,5-trisphosphate 3-kinase A (IP3K) catalytic domain in complex with scyllo-inositol 1,2,3,5-tetrakisphosphate/ADP/Mn
Keywords keywordsInositol polyphosphate, InsP, inositol kinase, IP3K, calcium, InsP3, IP3, IPK, IP3 3-K, TRANSFERASE; TRANSFERASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier26.22
Radius of gyration Rg (electron density) rg_electron25.37
Forward intensity I(0) i073853000.00
Molecular weight molecular_weight62503.0 kDa
Excluded volume excluded_volume76288 ų
Envelope volume envelope_volume94645 ų
Hydration-shell volume shell_volume30797 ų
Envelope diameter envelope_diameter88.7
Shell Rg shell_rg32.86
Envelope Rg envelope_rg25.09
Shape Rg shape_rg25.42
Total Rg total_rg25.97
Total atoms total_atoms4353
Residues n_residues525
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 dmax86.2
Rg (real space) rg_real26.14
Rg uncertainty (real space) rg_real_error0.43
I(0) (real space) i0_real7.3850e+07
I(0) uncertainty (real space) i0_real_error9.0650e+05
Rg (reciprocal space) rg_reciprocal26.16
I(0) (reciprocal space) i0_reciprocal73850000.0000
Solution quality estimate total_estimate0.8920
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary83.3
Skewness Skewness skewness0.268
Kurtosis Kurtosis kurtosis-0.350
Angular range angular_range— – 0.3050 −1
Current regularization parameter α current_alpha0.0001
Highest regularization parameter α highest_alpha11240000.0000
Real-space data points n_real_points62
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.865; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 1.000; Smooth: 0.997

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (6)

8. Citations (1)

9. Files and Curves (10)