PDBe 2e43

X-ray diffraction
2.1Å resolution

Crystal structure of C/EBPbeta Bzip homodimer K269A mutant bound to A High Affinity DNA fragment

Entry authors: Tahirov TH, Inoue-Bungo T, Sato K, Shiina M, Hamada K, Ogata K

Function and Biology Details

Cellular component:
  • not assigned
Sequence domain:
Structure domain:

Structure analysis Details

Assembly composition:
hetero tetramer (preferred)
Entry contents:
1 distinct polypeptide molecule
2 distinct DNA molecules
Macromolecules (3 distinct):
CCAAT/enhancer-binding protein beta Chains: A, B
Molecule details ›
Chains: A, B
Length: 78 amino acids
Theoretical weight: 9.32 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli BL21(DE3)
  • Canonical: P17676 (Residues: 259-336; Coverage: 23%)
Gene names: CEBPB, PP9092, TCF5
Sequence domains: Basic region leucine zipper
Structure domains: Single alpha-helices involved in coiled-coils or other helix-helix interfaces
Molecule details ›
Chain: D
Length: 16 nucleotides
Theoretical weight: 4.86 KDa
Source organism: Synthetic construct
Expression system: Not provided
Molecule details ›
Chain: C
Length: 16 nucleotides
Theoretical weight: 4.94 KDa
Source organism: Synthetic construct
Expression system: Not provided

Ligands and Environments

No bound ligands

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SPRING-8 BEAMLINE BL44B2
Spacegroup: C2221
Unit cell:
a: 101.681Å b: 112.731Å c: 74.932Å
α: 90° β: 90° γ: 90°
R R work R free
0.222 0.222 0.259
Expression systems:
  • Escherichia coli BL21(DE3)
  • Not provided