9qbt

KEAP1 complexed to cyclic peptide 34

Method: X-RAY DIFFRACTION Dmax: 55.8 Å Quality: EXCELLENT

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 heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain A; UniProt 321–609 Not recorded Cyclic peptide × 1 GOL GLYCEROL × 1 CL CHLORIDE ION × 4 NA SODIUM ION × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;293.15 K;SG1 H12 4.3M Sodium chloride ,0.1M Sodium HEPES 7.5 Resolution 2.33 Å R-free 0.208

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 194 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 2–290; UniProt 321–609

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 9qbt

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 9qbt
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2. Structure Basics 2. Structure Basics

Entry ID entry_id9qbt
Deposition date deposition_date2025-03-03
Structure title titleKEAP1 complexed to cyclic peptide 34
Keywords keywordsCyclic peptide, Protein-protein interaction, STRUCTURAL PROTEIN; STRUCTURAL PROTEIN
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier18.74
Radius of gyration Rg (electron density) rg_electron17.49
Forward intensity I(0) i019614300.00
Molecular weight molecular_weight32175.0 kDa
Excluded volume excluded_volume39499 ų
Envelope volume envelope_volume43868 ų
Hydration-shell volume shell_volume20167 ų
Envelope diameter envelope_diameter55.4
Shell Rg shell_rg24.59
Envelope Rg envelope_rg17.72
Shape Rg shape_rg17.43
Total Rg total_rg18.56
Total atoms total_atoms4382
Residues n_residues285
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 dmax55.8
Rg (real space) rg_real18.58
Rg uncertainty (real space) rg_real_error0.24
I(0) (real space) i0_real1.9610e+07
I(0) uncertainty (real space) i0_real_error2.1140e+05
Rg (reciprocal space) rg_reciprocal18.60
I(0) (reciprocal space) i0_reciprocal19610000.0000
Solution quality estimate total_estimate0.9021
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary24.4
Skewness Skewness skewness0.030
Kurtosis Kurtosis kurtosis-0.534
Angular range angular_range— – 0.4250 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha7716000.0000
Real-space data points n_real_points74
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.928; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.971; Smooth: 0.968

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (6)

8. Citations (1)

9. Files and Curves (10)