PDBe 3dpg

X-ray diffraction
1.91Å resolution

SgrAI with noncognate DNA bound


Function and Biology Details

Reaction catalysed:
Endonucleolytic cleavage of DNA to give specific double-stranded fragments with terminal 5'-phosphates
Biochemical function:
Biological process:
  • not assigned
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
hetero tetramer (preferred)
Entry contents:
1 distinct polypeptide molecule
1 distinct DNA molecule
Macromolecules (2 distinct):
SgraIR restriction enzyme Chains: A, B
Molecule details ›
Chains: A, B
Length: 338 amino acids
Theoretical weight: 37.94 KDa
Source organism: Streptomyces griseus
Expression system: Escherichia coli
  • Canonical: Q9F6L0 (Residues: 2-339; Coverage: 100%)
Gene name: sgraIR
Sequence domains: Cfr10I/Bse634I restriction endonuclease
Structure domains: Restriction Endonuclease
Molecule details ›
Chains: C, D
Length: 17 nucleotides
Theoretical weight: 5.25 KDa
Source organism: Streptomyces griseus
Expression system: Not provided

Ligands and Environments

1 bound ligand:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SSRL BEAMLINE BL7-1
Spacegroup: P21
Unit cell:
a: 69.726Å b: 78.621Å c: 86.834Å
α: 90° β: 109.76° γ: 90°
R R work R free
0.187 0.186 0.225
Expression systems:
  • Escherichia coli
  • Not provided