X-ray diffraction
1.31Å resolution

The crystal structure of a single chain H2B-H2A histone chimera from Xenopus laevis

Source organism: Xenopus laevis
Primary publication:
Structure of a single-chain H2A/H2B dimer.
Acta Crystallogr F Struct Biol Commun 76 194-198 (2020)
PMID: 32356520

Function and Biology Details

Biochemical function:
  • not assigned
Biological process:
  • not assigned
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
monomeric (preferred)
Entry contents:
1 distinct polypeptide molecule
Histone H2A type 1; Histone H2B 1.1 Chain: A
Molecule details ›
Chain: A
Length: 186 amino acids
Theoretical weight: 20.52 KDa
Source organism: Xenopus laevis
Expression system: Escherichia coli BL21(DE3)
  • Canonical: P02281 (Residues: 34-126; Coverage: 74%)
  • Canonical: P06897 (Residues: 14-105; Coverage: 71%)
Sequence domains:

Ligands and Environments

1 bound ligand:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 31-ID
Spacegroup: C2
Unit cell:
a: 61.793Å b: 44.679Å c: 66.45Å
α: 90° β: 117.27° γ: 90°
R R work R free
0.171 0.17 0.206
Expression system: Escherichia coli BL21(DE3)