3zim

Discovery of a potent and isoform-selective targeted covalent inhibitor of the lipid kinase PI3Kalpha

Method: X-RAY DIFFRACTION Dmax: 98.8 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 107–1046 Fragment:N-TERMINAL TRUNCATED, RESIDUES 107-1046 KKR 1-[4-[[2-(1H-indazol-4-yl)-4-morpholin-4-yl-thieno[3,2-d]pyrimidin-6-yl]methyl]piperazin-1-yl]-6-methyl-hept-5-ene-1,4- dione × 1 X-RAY DIFFRACTION mmCIF provides none of the parsed experimental conditions Resolution 2.85 Å R-free 0.278

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 1–940; UniProt 107–1046

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 3zim

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 3zim
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2. Structure Basics 2. Structure Basics

Entry ID entry_id3zim
Deposition date deposition_date2013-01-09
Structure title titleDiscovery of a potent and isoform-selective targeted covalent inhibitor of the lipid kinase PI3Kalpha
Keywords keywordsTRANSFERASE; TRANSFERASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier31.36
Radius of gyration Rg (electron density) rg_electron30.27
Forward intensity I(0) i0166941000.00
Molecular weight molecular_weight103750.0 kDa
Excluded volume excluded_volume130330 ų
Envelope volume envelope_volume166870 ų
Hydration-shell volume shell_volume44540 ų
Envelope diameter envelope_diameter108.0
Shell Rg shell_rg38.47
Envelope Rg envelope_rg30.69
Shape Rg shape_rg30.26
Total Rg total_rg31.03
Total atoms total_atoms7279
Residues n_residues886
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 dmax98.8
Rg (real space) rg_real31.21
Rg uncertainty (real space) rg_real_error0.71
I(0) (real space) i0_real1.6690e+08
I(0) uncertainty (real space) i0_real_error2.7880e+06
Rg (reciprocal space) rg_reciprocal31.28
I(0) (reciprocal space) i0_reciprocal166900000.0000
Solution quality estimate total_estimate0.9015
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary38.7
Skewness Skewness skewness0.211
Kurtosis Kurtosis kurtosis-0.431
Angular range angular_range— – 0.2550 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha53490000.0000
Real-space data points n_real_points52
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.918; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.998; Smooth: 0.964

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (3)

7. Fold Classification (SCOP + CATH) 5 domains

CATH v4.4 (5 domains)

Domain ID domain_id3zimA01
Class class3 — Alpha Beta
Architecture architecture10 — Roll
Topology topology20 — Ubiquitin-like (UB roll)
Homologous superfamily homologous superfamily90 — Phosphatidylinositol 3-kinase Catalytic Subunit; Chain A, domain 1
Domain ID domain_id3zimA02
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily150 — C2 domain
Domain ID domain_id3zimA03
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)
Domain ID domain_id3zimA04
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology1010 — Phosphatidylinositol 3-kinase Catalytic Subunit; Chain A, domain 4
Homologous superfamily homologous superfamily10 — Phosphatidylinositol 3-kinase Catalytic Subunit; Chain A, domain 4
Domain ID domain_id3zimA05
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology1070 — Phosphatidylinositol 3-kinase Catalytic Subunit; Chain A, Domain 5
Homologous superfamily homologous superfamily11 — Phosphatidylinositol 3-/4-kinase, catalytic domain

8. Citations (1)

9. Files and Curves (10)