4iwr

X-ray diffraction
2.4Å resolution

C.Esp1396I bound to a 25 base pair operator site

Released:
Source organism: Enterobacter sp. RFL1396
Primary publication:
Structural analysis of DNA-protein complexes regulating the restriction-modification system Esp1396I.
Acta Crystallogr Sect F Struct Biol Cryst Commun 69 962-6 (2013)
PMID: 23989141

Function and Biology Details

Structure analysis Details

Assembly composition:
hetero tetramer (preferred)
PDBe Complex ID:
PDB-CPX-117665 (preferred)
Entry contents:
1 distinct polypeptide molecule
2 distinct DNA molecules
Macromolecules (3 distinct):
HTH cro/C1-type domain-containing protein Chains: A, B, E, F
Molecule details ›
Chains: A, B, E, F
Length: 82 amino acids
Theoretical weight: 9.52 KDa
Source organism: Enterobacter sp. RFL1396
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: Q8GGH0 (Residues: 1-79; Coverage: 100%)
Gene name: esp1396IC
Sequence domains: Helix-turn-helix
Structure domains: lambda repressor-like DNA-binding domains
DNA (25-MER) Chains: C, G
Molecule details ›
Chains: C, G
Length: 25 nucleotides
Theoretical weight: 7.72 KDa
Source organism: Enterobacter sp. RFL1396
Expression system: Not provided
DNA (25-MER) Chains: D, H
Molecule details ›
Chains: D, H
Length: 25 nucleotides
Theoretical weight: 7.63 KDa
Source organism: Enterobacter sp. RFL1396
Expression system: Not provided

Ligands and Environments

No bound ligands
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ESRF BEAMLINE ID14-4
Spacegroup: P32
Unit cell:
a: 48.02Å b: 48.02Å c: 218.35Å
α: 90° β: 90° γ: 120°
R-values:
R R work R free
0.2 0.197 0.26
Expression systems:
  • Escherichia coli BL21(DE3)
  • Not provided