2g8w

X-ray diffraction
2.05Å resolution

B. halodurans RNase H catalytic domain E188A mutant in complex with Ca2+ and RNA/DNA hybrid

Released:

Function and Biology Details

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

Structure analysis Details

Assembly composition:
hetero trimer (preferred)
PDBe Complex ID:
PDB-CPX-115289 (preferred)
Entry contents:
1 distinct polypeptide molecule
1 distinct DNA molecule
1 distinct RNA molecule
Macromolecules (3 distinct):
Ribonuclease H Chain: A
Molecule details ›
Chain: A
Length: 142 amino acids
Theoretical weight: 16.27 KDa
Source organism: Alkalihalobacillus halodurans
Expression system: Escherichia coli
UniProt:
  • Canonical: Q9KEI9 (Residues: 59-196; Coverage: 70%)
Gene names: BH0863, rnhA
Structure domains: Ribonuclease H-like superfamily/Ribonuclease H
5'-D(*AP*TP*GP*TP*CP*G)-3' Chain: C
Molecule details ›
Chain: C
Length: 6 nucleotides
Theoretical weight: 1.82 KDa
Source organism: Halalkalibacterium halodurans
Expression system: Not provided
5'-R(P*UP*CP*GP*AP*CP*A)-3' Chain: B
Molecule details ›
Chain: B
Length: 6 nucleotides
Theoretical weight: 1.88 KDa
Source organism: Halalkalibacterium halodurans
Expression system: Not provided

Ligands and Environments

1 bound ligand:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: RIGAKU
Spacegroup: C2
Unit cell:
a: 81.671Å b: 37.091Å c: 61.98Å
α: 90° β: 96.74° γ: 90°
R-values:
R R work R free
0.215 0.215 0.242
Expression systems:
  • Escherichia coli
  • Not provided