7r9v

Structure of PIK3CA with covalent inhibitor 19

Method: X-RAY DIFFRACTION Dmax: 96.1 Å Quality: REASONABLE

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 105–1048 Not recorded 2Q7 N-[2-(4-{4-[2-amino-4-(difluoromethyl)pyrimidin-5-yl]-6-(morpholin-4-yl)-1,3,5-triazin-2-yl}piperazin-1-yl)-2-oxoethyl]-1-(prop-2-enoyl)piperidine-4-carboxamide × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;291 K;PEG6000 8%, 0.6 M sodium formate, 0.1 M CHES pH 9.4, 5 mM TCEP Resolution 2.69 Å R-free 0.292

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 5–948; UniProt 105–1048

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 7r9v

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 7r9v
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2. Structure Basics 2. Structure Basics

Entry ID entry_id7r9v
Deposition date deposition_date2021-06-29
Structure title titleStructure of PIK3CA with covalent inhibitor 19
Keywords keywordsPI3K, p110, PIK3CA, PIP3, TRANSFERASE, TRANSFERASE-TRANSFERASE INHIBITOR complex; TRANSFERASE/TRANSFERASE INHIBITOR
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier30.13
Radius of gyration Rg (electron density) rg_electron29.07
Forward intensity I(0) i0140584000.00
Molecular weight molecular_weight94317.0 kDa
Excluded volume excluded_volume118030 ų
Envelope volume envelope_volume147790 ų
Hydration-shell volume shell_volume41359 ų
Envelope diameter envelope_diameter101.9
Shell Rg shell_rg37.19
Envelope Rg envelope_rg29.25
Shape Rg shape_rg29.09
Total Rg total_rg29.75
Total atoms total_atoms6666
Residues n_residues855
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 dmax96.1
Rg (real space) rg_real30.00
Rg uncertainty (real space) rg_real_error0.56
I(0) (real space) i0_real1.4060e+08
I(0) uncertainty (real space) i0_real_error2.0250e+06
Rg (reciprocal space) rg_reciprocal30.06
I(0) (reciprocal space) i0_reciprocal140600000.0000
Solution quality estimate total_estimate0.6791
Solution quality rating solution_quality REASONABLE a REASONABLE solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary38.1
Skewness Skewness skewness0.199
Kurtosis Kurtosis kurtosis-0.434
Angular range angular_range— – 0.2650 −1
Current regularization parameter α current_alpha0.0001
Highest regularization parameter α highest_alpha44090000.0000
Real-space data points n_real_points54
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.899; Stabil: 1.000; Sysdev: 0.050; Positv: 1.000; Valcen: 0.994; Smooth: 0.982

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (2)

7. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

Domain ID domain_id7r9vA01
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily150 — C2 domain
Domain ID domain_id7r9vA02
Class class1 — Mainly Alpha
Architecture architecture25 — Alpha Horseshoe
Topology topology40 — Serine Threonine Protein Phosphatase 5, Tetratricopeptide repeat
Homologous superfamily homologous superfamily70 — Phosphatidylinositol 3-kinase, accessory domain (PIK)

8. Citations (1)

9. Files and Curves (10)