8pkw

Kelch domain of KEAP1 in complex with a ortho-dimethylbenzene linked cyclic peptide 5 (ortho-WRCDPETaEC).

Method: X-RAY DIFFRACTION Dmax: 92.3 Å Quality: REASONABLE

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

Kelch-like ECH-associated protein 1

Homo sapiens

UniProt Q14145

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 312–623 Not recorded SO4 SULFATE ION × 2 CL CHLORIDE ION × 1 EDO 1,2-ETHANEDIOL × 2 GOL GLYCEROL × 1 NA SODIUM ION × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;293 K;100 mM Bis-Tris pH 6.5, 1.5 M NH4SO4, 0.2 % PEG 550 Resolution 1.54 Å R-free 0.199
2 Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain B; UniProt 312–623 Not recorded CP5 × 1 SO4 SULFATE ION × 1 GOL GLYCEROL × 1 NA SODIUM ION × 1 ZK2 (2-methylphenyl)methanol × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;293 K;100 mM Bis-Tris pH 6.5, 1.5 M NH4SO4, 0.2 % PEG 550 Resolution 1.54 Å R-free 0.199

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.

119 other PDB entries and 193 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name KEAP1_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 4–315; UniProt 312–623 Author chain B; PDBConstruct 4–315; UniProt 312–623

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 8pkw

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 8pkw
Download Download

2. Structure Basics 2. Structure Basics

Entry ID entry_id8pkw
Deposition date deposition_date2023-06-27
Structure title titleKelch domain of KEAP1 in complex with a ortho-dimethylbenzene linked cyclic peptide 5 (ortho-WRCDPETaEC).
Keywords keywordsPeptide inhibitor, Inhibitor complex, cyclic peptide, Ubiquitin ligase, NRF2, PROTEIN BINDING; PROTEIN BINDING
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier27.95
Radius of gyration Rg (electron density) rg_electron26.90
Forward intensity I(0) i073024500.00
Molecular weight molecular_weight63103.0 kDa
Excluded volume excluded_volume77142 ų
Envelope volume envelope_volume94814 ų
Hydration-shell volume shell_volume29565 ų
Envelope diameter envelope_diameter94.8
Shell Rg shell_rg34.10
Envelope Rg envelope_rg26.65
Shape Rg shape_rg26.89
Total Rg total_rg27.62
Total atoms total_atoms4425
Residues n_residues588
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 dmax92.3
Rg (real space) rg_real27.99
Rg uncertainty (real space) rg_real_error0.75
I(0) (real space) i0_real7.3020e+07
I(0) uncertainty (real space) i0_real_error1.1670e+06
Rg (reciprocal space) rg_reciprocal27.98
I(0) (reciprocal space) i0_reciprocal73020000.0000
Solution quality estimate total_estimate0.6923
Solution quality rating solution_quality REASONABLE a REASONABLE solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary29.2
Skewness Skewness skewness0.323
Kurtosis Kurtosis kurtosis-0.593
Angular range angular_range— – 0.2850 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha13790000.0000
Real-space data points n_real_points58
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.847; Stabil: 1.000; Sysdev: 0.177; Positv: 1.000; Valcen: 0.951; Smooth: 0.974

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (9)

8. Citations (1)

9. Files and Curves (10)