1gu5

Crystal structure of C/EBPBETA BZIP homodimer bound to a DNA fragment from the MIM-1 promoter

Method: X-RAY DIFFRACTION Dmax: 98.3 Å Quality: REASONABLE

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

CAAT/ENHANCER BINDING PROTEIN BETA

HOMO SAPIENS

UniProt P17676

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 259–336 Chain B; UniProt 259–336 Fragment:BZIP DOMAIN, RESIDUES 259-336 ;5'-D(*TP*TP*GP*TP*GP*TP*TP*GP*GP*CP* CP*AP*AP*TP*CP*A)-3' ; × 1 ;5'-D(*AP*TP*GP*AP*TP*TP*GP*GP*CP*CP* AP*AP*CP*AP*CP*A)-3' ; × 1 X-RAY DIFFRACTION X-ray crystallization conditions:pH 6.5;0.08 M MAGNESIUM ACETATE, 15.0% V/V PEG 400, 0.05 M SODIUM CACODYLATE BUFFER PH 6.5, PROTEIN-DNA COMPLEX CONCENTRATION WAS 12 MG/ML WITH ADDITION OF 0.01 M DTT, PROTEIN:DNA RATIO WAS 1:1.2 FOR CRYOPROTECTION THE CONCENTRATION OF PEG 400 WAS ADJUSTED TO 36% V/V Resolution 2.10 Å R-free 0.277

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.

15 other PDB entries and 17 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name P17676
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–78; UniProt 259–336 Author chain B; PDBConstruct 1–78; UniProt 259–336

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 1gu5

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 1gu5
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2. Structure Basics 2. Structure Basics

Entry ID entry_id1gu5
Deposition date deposition_date2002-01-24
Structure title titleCrystal structure of C/EBPBETA BZIP homodimer bound to a DNA fragment from the MIM-1 promoter
Keywords keywordsTRANSCRIPTION/DNA, PROTEIN-DNA COMPLEX, TRANSCRIPTION FACTOR, BZIP, C/EBP, 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_guinier25.78
Radius of gyration Rg (electron density) rg_electron27.72
Forward intensity I(0) i018427300.00
Molecular weight molecular_weight25880.0 kDa
Excluded volume excluded_volume29439 ų
Envelope volume envelope_volume41414 ų
Hydration-shell volume shell_volume15074 ų
Envelope diameter envelope_diameter100.9
Shell Rg shell_rg29.20
Envelope Rg envelope_rg28.27
Shape Rg shape_rg27.80
Total Rg total_rg27.70
Total atoms total_atoms1779
Residues n_residues166
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 dmax98.3
Rg (real space) rg_real26.41
Rg uncertainty (real space) rg_real_error1.31
I(0) (real space) i0_real1.8430e+07
I(0) uncertainty (real space) i0_real_error2.9030e+05
Rg (reciprocal space) rg_reciprocal26.22
I(0) (reciprocal space) i0_reciprocal18420000.0000
Solution quality estimate total_estimate0.6866
Solution quality rating solution_quality REASONABLE a REASONABLE solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary19.0
Skewness Skewness skewness0.776
Kurtosis Kurtosis kurtosis-0.075
Angular range angular_range— – 0.3100 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha1295000.0000
Real-space data points n_real_points63
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.295; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.090; Smooth: 0.946

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

7. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd1gu5a_
Class classh — Coiled coil proteins
Fold Fold foldh.1 — Parallel coiled-coil
Superfamily Superfamily superfamilyh.1.3 — Leucine zipper domain
Family Family familyh.1.3.1 — Leucine zipper domain
Domain ID domain_idd1gu5b_
Class classh — Coiled coil proteins
Fold Fold foldh.1 — Parallel coiled-coil
Superfamily Superfamily superfamilyh.1.3 — Leucine zipper domain
Family Family familyh.1.3.1 — Leucine zipper domain

CATH v4.4 (2 domains)

Domain ID domain_id1gu5A00
Class class1 — Mainly Alpha
Architecture architecture20 — Up-down Bundle
Topology topology5 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces
Homologous superfamily homologous superfamily170
Domain ID domain_id1gu5B00
Class class1 — Mainly Alpha
Architecture architecture20 — Up-down Bundle
Topology topology5 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces
Homologous superfamily homologous superfamily170

8. Citations (6)

9. Files and Curves (10)