PDBe 3kwq

X-ray diffraction
3.5Å resolution

Structural characterization of H3K56Q nucleosomes and nucleosomal arrays

Released:
Source organism: Xenopus laevis

Function and Biology Details

Structure analysis Details

Assembly composition:
hetero decamer (preferred)
Entry contents:
4 distinct polypeptide molecules
1 distinct DNA molecule
Macromolecules (5 distinct):
Histone H4 Chains: B, F
Molecule details ›
Chains: B, F
Length: 83 amino acids
Theoretical weight: 9.41 KDa
Source organism: Xenopus laevis
Expression system: Escherichia coli
UniProt:
  • Canonical: P62799 (Residues: 21-103; Coverage: 81%)
Structure domains: Histone, subunit A
Histone H2A type 1 Chains: C, G
Molecule details ›
Chains: C, G
Length: 107 amino acids
Theoretical weight: 11.72 KDa
Source organism: Xenopus laevis
Expression system: Escherichia coli
UniProt:
  • Canonical: P06897 (Residues: 15-121; Coverage: 82%)
Structure domains: Histone, subunit A
Histone H3.2 Chains: A, E
Molecule details ›
Chains: A, E
Length: 98 amino acids
Theoretical weight: 11.5 KDa
Source organism: Xenopus laevis
Expression system: Escherichia coli
UniProt:
  • Canonical: P84233 (Residues: 39-136; Coverage: 72%)
Structure domains: Histone, subunit A
Histone H2B 1.1 Chains: D, H
Molecule details ›
Chains: D, H
Length: 93 amino acids
Theoretical weight: 10.38 KDa
Source organism: Xenopus laevis
Expression system: Escherichia coli
UniProt:
  • Canonical: P02281 (Residues: 34-126; Coverage: 74%)
Structure domains: Histone, subunit A
DNA (146-MER) Chains: I, J
Molecule details ›
Chains: I, J
Length: 146 nucleotides
Theoretical weight: 45.05 KDa

Ligands and Environments

No bound ligands

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ALS BEAMLINE 4.2.2
Spacegroup: P212121
Unit cell:
a: 105.561Å b: 109.542Å c: 180.65Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.368 0.268 0.315
Expression system: Escherichia coli