6si0

p53 cancer mutant Y220C in complex with small-molecule stabilizer PK9323

Method: X-RAY DIFFRACTION Dmax: 74.8 Å Quality: REASONABLE

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

Cellular tumor antigen p53

Homo sapiens

UniProt P04637

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 94–312 Fragment:DNA-binding domain Mutation:M133L, V203A, Y220C, N239Y, N268D ZN ZINC ION × 1 LEK 1-[9-ethyl-7-(1,3-thiazol-4-yl)carbazol-3-yl]-~{N}-methyl-methanamine × 1 EDO 1,2-ETHANEDIOL × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;293 K;Protein solution: 6 mg/ml protein in 25 mM sodium phosphate, ph 7.2, 150 mm KCl, 5 mm DTT. Reservoir buffer: 100 mm HEPES, pH 7.2, 19% (w/v) polyethylene glycol 4000, 5 mm DTT. Soaking buffer: Saturated solution of PK9323 in 100 mm HEPES, ph 7.2, 10 mM sodium phosphate, ph 7.2, 19% (w/v) polyethylene glycol 4000, 20 % (v/v) glycerol, 150 mm KCl. Resolution 1.53 Å R-free 0.171
2 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain B; UniProt 94–312 Fragment:DNA-binding domain Mutation:M133L, V203A, Y220C, N239Y, N268D ZN ZINC ION × 1 LEK 1-[9-ethyl-7-(1,3-thiazol-4-yl)carbazol-3-yl]-~{N}-methyl-methanamine × 1 GOL GLYCEROL × 1 EPE 4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;293 K;Protein solution: 6 mg/ml protein in 25 mM sodium phosphate, ph 7.2, 150 mm KCl, 5 mm DTT. Reservoir buffer: 100 mm HEPES, pH 7.2, 19% (w/v) polyethylene glycol 4000, 5 mm DTT. Soaking buffer: Saturated solution of PK9323 in 100 mm HEPES, ph 7.2, 10 mM sodium phosphate, ph 7.2, 19% (w/v) polyethylene glycol 4000, 20 % (v/v) glycerol, 150 mm KCl. Resolution 1.53 Å R-free 0.171

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.

291 other PDB entries and 461 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name P53_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–219; UniProt 94–312 Author chain B; PDBConstruct 1–219; UniProt 94–312

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 6si0

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 6si0
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2. Structure Basics 2. Structure Basics

Entry ID entry_id6si0
Deposition date deposition_date2019-08-08
Structure title titlep53 cancer mutant Y220C in complex with small-molecule stabilizer PK9323
Keywords keywords;p53, transcription factor, tumor suppressor, cancer therapy, DNA-binding domain, oncogenic mutant, protein misfolding, druggable surface crevice, small-molecule stabilizer, mutant p53 rescue, DNA BINDING PROTEIN ;; DNA BINDING PROTEIN
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier24.13
Radius of gyration Rg (electron density) rg_electron23.20
Forward intensity I(0) i037578800.00
Molecular weight molecular_weight44622.0 kDa
Excluded volume excluded_volume54644 ų
Envelope volume envelope_volume67230 ų
Hydration-shell volume shell_volume24271 ų
Envelope diameter envelope_diameter77.4
Shell Rg shell_rg29.90
Envelope Rg envelope_rg23.06
Shape Rg shape_rg23.20
Total Rg total_rg23.92
Total atoms total_atoms3108
Residues n_residues395
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 dmax74.8
Rg (real space) rg_real24.05
Rg uncertainty (real space) rg_real_error0.45
I(0) (real space) i0_real3.7580e+07
I(0) uncertainty (real space) i0_real_error5.2150e+05
Rg (reciprocal space) rg_reciprocal24.07
I(0) (reciprocal space) i0_reciprocal37580000.0000
Solution quality estimate total_estimate0.7053
Solution quality rating solution_quality REASONABLE a REASONABLE solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary28.1
Skewness Skewness skewness0.209
Kurtosis Kurtosis kurtosis-0.558
Angular range angular_range— – 0.3300 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha4238000.0000
Real-space data points n_real_points65
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.958; Stabil: 1.000; Sysdev: 0.101; Positv: 1.000; Valcen: 0.999; Smooth: 0.989

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (7)

7. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd6si0a_
Class classb — All beta proteins
Fold Fold foldb.2 — Common fold of diphtheria toxin/transcription factors/cytochrome f
Superfamily Superfamily superfamilyb.2.5 — p53-like transcription factors
Family Family familyb.2.5.2 — p53 DNA-binding domain-like
Domain ID domain_idd6si0b_
Class classb — All beta proteins
Fold Fold foldb.2 — Common fold of diphtheria toxin/transcription factors/cytochrome f
Superfamily Superfamily superfamilyb.2.5 — p53-like transcription factors
Family Family familyb.2.5.2 — p53 DNA-binding domain-like

CATH v4.4 (2 domains)

Domain ID domain_id6si0A00
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily720
Domain ID domain_id6si0B00
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily720

8. Citations (1)

9. Files and Curves (10)