8pp8

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

Method: X-RAY DIFFRACTION Dmax: 85.4 Å Quality: REASONABLE

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 ANP PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER × 1 3IA L-scyllo-inositol 1,2,4-trisphosphate × 1 MN MANGANESE (II) ION × 1 SO4 SULFATE ION × 3 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 AMP-PNP and 3 mM MnCl2. Resolution 1.59 Å R-free 0.212
2 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain B; UniProt 188–461 Not recorded ANP PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER × 1 3IA L-scyllo-inositol 1,2,4-trisphosphate × 1 MN MANGANESE (II) ION × 1 SO4 SULFATE ION × 3 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 AMP-PNP and 3 mM MnCl2. Resolution 1.59 Å R-free 0.212

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 8pp8

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 8pp8
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2. Structure Basics 2. Structure Basics

Entry ID entry_id8pp8
Deposition date deposition_date2023-07-07
Structure title titleHuman inositol 1,4,5-trisphosphate 3-kinase A (IP3K) catalytic domain in complex with L-scyllo-inositol 1,2,4-trisphosphate/AMP-PNP/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_guinier26.48
Radius of gyration Rg (electron density) rg_electron25.59
Forward intensity I(0) i077689200.00
Molecular weight molecular_weight64087.0 kDa
Excluded volume excluded_volume78185 ų
Envelope volume envelope_volume97644 ų
Hydration-shell volume shell_volume31308 ų
Envelope diameter envelope_diameter88.7
Shell Rg shell_rg33.34
Envelope Rg envelope_rg25.39
Shape Rg shape_rg25.64
Total Rg total_rg26.20
Total atoms total_atoms4465
Residues n_residues538
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 dmax85.4
Rg (real space) rg_real26.38
Rg uncertainty (real space) rg_real_error0.44
I(0) (real space) i0_real7.7690e+07
I(0) uncertainty (real space) i0_real_error9.4490e+05
Rg (reciprocal space) rg_reciprocal26.41
I(0) (reciprocal space) i0_reciprocal77690000.0000
Solution quality estimate total_estimate0.6996
Solution quality rating solution_quality REASONABLE a REASONABLE solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary32.8
Skewness Skewness skewness0.243
Kurtosis Kurtosis kurtosis-0.379
Angular range angular_range— – 0.3000 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha11480000.0000
Real-space data points n_real_points61
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.892; Stabil: 1.000; Sysdev: 0.145; Positv: 1.000; Valcen: 1.000; Smooth: 0.980

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (6)

8. Citations (1)

9. Files and Curves (10)