X-ray diffraction
2.65Å resolution

Crystal structure of the Colicin I receptor Cir from E.coli

Source organism: Escherichia coli
Entry authors: Buchanan SK, Esser L, Lukacik P

Function and Biology Details

Structure analysis Details

Assembly composition:
monomeric (preferred)
Entry contents:
1 distinct polypeptide molecule
Colicin I receptor Chain: A
Molecule details ›
Chain: A
Length: 639 amino acids
Theoretical weight: 71.76 KDa
Source organism: Escherichia coli
Expression system: Escherichia coli BL21(DE3)
  • Canonical: P17315 (Residues: 26-663; Coverage: 100%)
Gene names: JW2142, b2155, cir, cirA, feuA
Sequence domains:
Structure domains:

Ligands and Environments

2 bound ligands:
1 modified residue:

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 22-ID
Spacegroup: C2
Unit cell:
a: 90.593Å b: 84.336Å c: 99.458Å
α: 90° β: 109.16° γ: 90°
R R work R free
0.241 0.239 0.291
Expression system: Escherichia coli BL21(DE3)