8exl

Crystal structure of PI3K-alpha in complex with taselisib

Method: X-RAY DIFFRACTION Dmax: 96.6 Å Quality: EXCELLENT

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

Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha isoform

Homo sapiens

UniProt P42336

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 7–1052 Not recorded 799 2-methyl-2-(4-{2-[3-methyl-1-(propan-2-yl)-1H-1,2,4-triazol-5-yl]-5,6-dihydroimidazo[1,2-d][1,4]benzoxazepin-9-yl}-1H-pyrazol-1-yl)propanamide × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 6.2;291 K;0.1M MES buffer pH 6.2, 16% PEG 20,000, 0.1M KCl Resolution 1.99 Å R-free 0.225

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.

134 other PDB entries and 145 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name PK3CA_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 28–1080; UniProt 7–1052

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 8exl

P(r) Distance Distribution P(r) Distribution

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

Entry ID entry_id8exl
Deposition date deposition_date2022-10-25
Structure title titleCrystal structure of PI3K-alpha in complex with taselisib
Keywords keywordsPI3K, drug, inhibitor, cancer, oncology, CELL CYCLE; CELL CYCLE
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_electron29.88
Forward intensity I(0) i0160953000.00
Molecular weight molecular_weight101440.0 kDa
Excluded volume excluded_volume127130 ų
Envelope volume envelope_volume157240 ų
Hydration-shell volume shell_volume42904 ų
Envelope diameter envelope_diameter103.0
Shell Rg shell_rg37.91
Envelope Rg envelope_rg29.99
Shape Rg shape_rg29.89
Total Rg total_rg30.58
Total atoms total_atoms7126
Residues n_residues892
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 dmax96.6
Rg (real space) rg_real30.85
Rg uncertainty (real space) rg_real_error0.58
I(0) (real space) i0_real1.6100e+08
I(0) uncertainty (real space) i0_real_error2.4480e+06
Rg (reciprocal space) rg_reciprocal30.92
I(0) (reciprocal space) i0_reciprocal161000000.0000
Solution quality estimate total_estimate0.9023
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary39.8
Skewness Skewness skewness0.189
Kurtosis Kurtosis kurtosis-0.456
Angular range angular_range— – 0.2550 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha46240000.0000
Real-space data points n_real_points52
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.930; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.997; Smooth: 0.937

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (3)

8. Citations (1)

9. Files and Curves (10)