X-ray diffraction
1.49Å resolution

Structure of 5-chlorouracil modified A:U base pair


Function and Biology Details

Reaction catalysed:
Endonucleolytic cleavage to 5'-phosphomonoester.
Biochemical function:
Biological process:
  • not assigned
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
hetero trimer (preferred)
Entry contents:
1 distinct polypeptide molecule
1 distinct DNA molecule
Macromolecules (2 distinct):
Ribonuclease H Chains: A, B
Molecule details ›
Chains: A, B
Length: 134 amino acids
Theoretical weight: 15.43 KDa
Source organism: Bacillus halodurans C-125
Expression system: Escherichia coli
  • Canonical: Q9KEI9 (Residues: 61-194; Coverage: 68%)
Gene names: BH0863, rnhA
Structure domains: Ribonuclease H-like superfamily/Ribonuclease H
DNA (5'-D(*CP*GP*CP*GP*AP*AP*TP*(UCL)P*CP*GP*CP*G)-3') Chains: C, D, E, F
Molecule details ›
Chains: C, D, E, F
Length: 12 nucleotides
Theoretical weight: 3.68 KDa
Source organism: Bacillus halodurans C-125
Expression system: Not provided

Ligands and Environments

3 bound ligands:
1 modified residue:

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 21-ID-F
Spacegroup: P212121
Unit cell:
a: 64.075Å b: 64.756Å c: 116.469Å
α: 90° β: 90° γ: 90°
R R work R free
0.218 0.189 0.218
Expression systems:
  • Escherichia coli
  • Not provided