PDBe 3sr1

X-ray diffraction
1.45Å resolution

Crystal structure of Staphylococcal nuclease variant Delta+PHS A69G bound to Ca2+ and thymidine-5',3'-diphosphate at cryogenic temperature

Source organism: Staphylococcus aureus
Entry authors: Doctrow BM, Schlessman JL, Garcia-Moreno E B, Heroux A

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
Nuclease A Chain: A
Molecule details ›
Chain: A
Length: 143 amino acids
Theoretical weight: 16.13 KDa
Source organism: Staphylococcus aureus
Expression system: Escherichia coli BL21(DE3)
  • Best match: P00644 (Residues: 83-231)
Gene name: nuc

Ligands and Environments

2 bound ligands:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: NSLS BEAMLINE X25
Spacegroup: P21
Unit cell:
a: 31.222Å b: 60.652Å c: 38.091Å
α: 90° β: 93.69° γ: 90°
R R work R free
0.168 0.164 0.202
Expression system: Escherichia coli BL21(DE3)