1kb6

Crystal Structure of VDR DNA-binding Domain Bound to Rat Osteocalcin (OC) Response Element

Method: X-RAY DIFFRACTION Dmax: 80.3 Å Quality: REASONABLE

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

Vitamin D3 Receptor

Homo sapiens

UniProt P11473

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–DNA Homooligomer Protein × 2 DNA 2 PDB declaration: tetrameric(4) Consistent with all polymer counts Chain A; UniProt 16–125 Chain B; UniProt 16–125 Fragment:DNA-binding Domain (Residues 16-125) 5'-D(*CP*AP*CP*GP*GP*GP*TP*GP*AP*AP*TP*GP*AP*GP*GP*AP*CP*A)-3' × 1 5'-D(*TP*GP*TP*CP*CP*TP*CP*AP*TP*TP*CP*AP*CP*CP*CP*GP*TP*G)-3' × 1 ZN ZINC ION × 4 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 5.6;291 K;PEG 8000, magnesium chloride, MES, glycerol, DTT, pH 5.6, VAPOR DIFFUSION, HANGING DROP, temperature 291K Resolution 2.70 Å R-free 0.275

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.

51 other PDB entries and 51 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name VDR_HUMAN
Isoform
PDB entities 3
Chains and sequence ranges Author chain A; PDBConstruct 1–110; UniProt 16–125 Author chain B; PDBConstruct 1–110; UniProt 16–125

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 1kb6

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 1kb6
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2. Structure Basics 2. Structure Basics

Entry ID entry_id1kb6
Deposition date deposition_date2001-11-05
Structure title titleCrystal Structure of VDR DNA-binding Domain Bound to Rat Osteocalcin (OC) Response Element
Keywords keywordsVDR, NUCLEAR RECEPTOR, PROTEIN-DNA COMPLEX, VITAMIN D, TRANSCRIPTION-DNA COMPLEX; TRANSCRIPTION/DNA
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier22.00
Radius of gyration Rg (electron density) rg_electron21.82
Forward intensity I(0) i030153400.00
Molecular weight molecular_weight32987.0 kDa
Excluded volume excluded_volume37360 ų
Envelope volume envelope_volume49455 ų
Hydration-shell volume shell_volume19996 ų
Envelope diameter envelope_diameter86.0
Shell Rg shell_rg27.24
Envelope Rg envelope_rg21.96
Shape Rg shape_rg21.81
Total Rg total_rg22.43
Total atoms total_atoms2237
Residues n_residues231
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 dmax80.3
Rg (real space) rg_real22.13
Rg uncertainty (real space) rg_real_error0.76
I(0) (real space) i0_real3.0150e+07
I(0) uncertainty (real space) i0_real_error4.6180e+05
Rg (reciprocal space) rg_reciprocal22.10
I(0) (reciprocal space) i0_reciprocal30150000.0000
Solution quality estimate total_estimate0.7432
Solution quality rating solution_quality REASONABLE a REASONABLE solution
P(r) peaks n_peaks3
Primary peak position r_peak_primary22.8
Skewness Skewness skewness0.521
Kurtosis Kurtosis kurtosis-0.048
Angular range angular_range— – 0.3600 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha4523000.0000
Real-space data points n_real_points68
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.646; Stabil: 0.999; Sysdev: 1.000; Positv: 1.000; Valcen: 0.724; Smooth: 0.000

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (5)

7. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd1kb6a_
Class classg — Small proteins
Fold Fold foldg.39 — Glucocorticoid receptor-like (DNA-binding domain)
Superfamily Superfamily superfamilyg.39.1 — Glucocorticoid receptor-like (DNA-binding domain)
Family Family familyg.39.1.2 — Nuclear receptor
Domain ID domain_idd1kb6b_
Class classg — Small proteins
Fold Fold foldg.39 — Glucocorticoid receptor-like (DNA-binding domain)
Superfamily Superfamily superfamilyg.39.1 — Glucocorticoid receptor-like (DNA-binding domain)
Family Family familyg.39.1.2 — Nuclear receptor

CATH v4.4 (2 domains)

Domain ID domain_id1kb6A00
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology50 — Erythroid Transcription Factor GATA-1; Chain A
Homologous superfamily homologous superfamily10 — Erythroid Transcription Factor GATA-1, subunit A
Domain ID domain_id1kb6B00
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology50 — Erythroid Transcription Factor GATA-1; Chain A
Homologous superfamily homologous superfamily10 — Erythroid Transcription Factor GATA-1, subunit A

8. Citations (1)

9. Files and Curves (10)