1zgk

1.35 angstrom structure of the Kelch domain of Keap1

Method: X-RAY DIFFRACTION Dmax: 56.0 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 monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain A; UniProt 321–609 Fragment:KELCH domain Non-standard monomer:Yes (specific site not provided by mmCIF) No other associated polymer X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 7.5;277 K;4% PEG 4000, 100 MM NA HEPES, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K Resolution 1.35 Å R-free 0.133

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 20–308; 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 1zgk

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 1zgk
Download Download

2. Structure Basics 2. Structure Basics

Entry ID entry_id1zgk
Deposition date deposition_date2005-04-21
Structure title title1.35 angstrom structure of the Kelch domain of Keap1
Keywords keywordsBETA-PROPELLER, KELCH REPEAT MOTIF, 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_guinier18.66
Radius of gyration Rg (electron density) rg_electron17.47
Forward intensity I(0) i018980200.00
Molecular weight molecular_weight31207.0 kDa
Excluded volume excluded_volume38069 ų
Envelope volume envelope_volume42619 ų
Hydration-shell volume shell_volume19684 ų
Envelope diameter envelope_diameter56.7
Shell Rg shell_rg24.49
Envelope Rg envelope_rg17.69
Shape Rg shape_rg17.48
Total Rg total_rg18.37
Total atoms total_atoms2170
Residues n_residues281
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 dmax56.0
Rg (real space) rg_real18.50
Rg uncertainty (real space) rg_real_error0.23
I(0) (real space) i0_real1.8980e+07
I(0) uncertainty (real space) i0_real_error2.2970e+05
Rg (reciprocal space) rg_reciprocal18.52
I(0) (reciprocal space) i0_reciprocal18980000.0000
Solution quality estimate total_estimate0.9008
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary55.2
Skewness Skewness skewness0.016
Kurtosis Kurtosis kurtosis-0.530
Angular range angular_range— – 0.4250 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha4842000.0000
Real-space data points n_real_points74
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.919; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.973; Smooth: 0.976

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (2)

7. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

Domain ID domain_idd1zgka1
Class classb — All beta proteins
Fold Fold foldb.68 — 6-bladed beta-propeller
Superfamily Superfamily superfamilyb.68.11 — Kelch motif
Family Family familyb.68.11.1 — Kelch motif

CATH v4.4 (1 domains)

Domain ID domain_id1zgkA00
Class class2 — Mainly Beta
Architecture architecture120 — 6 Propeller
Topology topology10 — Neuraminidase
Homologous superfamily homologous superfamily80 — Kelch-type beta propeller

8. Citations (2)

9. Files and Curves (10)