6vo7

Crystal structure of PI3K-alpha Ras Binding Domain (RBD)

Method: X-RAY DIFFRACTION Dmax: 57.7 Å Quality: GOOD

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 157–300 Fragment:Ras Binding Domain (RBD) No other associated polymer X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 8.5;293 K;0.1 M Tris-HCL, 0.7 M Na Citrate, pH 8.5 Resolution 2.31 Å R-free 0.255

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 1–144; UniProt 157–300

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 6vo7

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 6vo7
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2. Structure Basics 2. Structure Basics

Entry ID entry_id6vo7
Deposition date deposition_date2020-01-30
Structure title titleCrystal structure of PI3K-alpha Ras Binding Domain (RBD)
Keywords keywordsRas binding domain, oncogenic signaling, effector, ONCOPROTEIN; ONCOPROTEIN
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier16.84
Radius of gyration Rg (electron density) rg_electron15.58
Forward intensity I(0) i04426260.00
Molecular weight molecular_weight15709.0 kDa
Excluded volume excluded_volume19978 ų
Envelope volume envelope_volume23114 ų
Hydration-shell volume shell_volume12961 ų
Envelope diameter envelope_diameter57.0
Shell Rg shell_rg20.88
Envelope Rg envelope_rg16.08
Shape Rg shape_rg15.56
Total Rg total_rg16.67
Total atoms total_atoms1101
Residues n_residues140
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 dmax57.7
Rg (real space) rg_real16.78
Rg uncertainty (real space) rg_real_error0.31
I(0) (real space) i0_real4.4260e+06
I(0) uncertainty (real space) i0_real_error5.1080e+04
Rg (reciprocal space) rg_reciprocal16.79
I(0) (reciprocal space) i0_reciprocal4426000.0000
Solution quality estimate total_estimate0.8693
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary19.5
Skewness Skewness skewness0.227
Kurtosis Kurtosis kurtosis-0.373
Angular range angular_range— – 0.4750 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha855700.0000
Real-space data points n_real_points78
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.769; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.992; Smooth: 0.998

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (2)

7. Fold Classification (SCOP + CATH) 1 domains

CATH v4.4 (1 domains)

Domain ID domain_id6vo7A01
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

8. Citations (1)

9. Files and Curves (10)