PDBe 2qdb

X-ray diffraction
2.2Å resolution

Crystal structure of staphylococcal nuclease variant E75Q/D21N/T33V/T41I/S59A/P117G/S128A at 100 K

Released:

Function and Biology Details

Reaction catalysed:
Endonucleolytic cleavage to nucleoside 3'-phosphates and 3'-phosphooligonucleotide end-products
Biochemical function:
Biological process:
  • not assigned
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
monomeric (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Nuclease A Chain: A
Molecule details ›
Chain: A
Length: 149 amino acids
Theoretical weight: 16.78 KDa
Source organism: Staphylococcus aureus
Expression system: Escherichia coli
UniProt:
  • Canonical: P00644 (Residues: 83-231; Coverage: 73%)
Gene name: nuc
Sequence domains: Staphylococcal nuclease homologue
Structure domains: OB fold (Dihydrolipoamide Acetyltransferase, E2P)

Ligands and Environments

1 bound ligand:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: RIGAKU RUH3R
Spacegroup: P41
Unit cell:
a: 48.668Å b: 48.668Å c: 63.277Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.255 0.239 0.276
Expression system: Escherichia coli