PDBe 1zt9

X-ray diffraction
2Å resolution

E. coli trp repressor, tetragonal crystal form

Source organism: Escherichia coli
Entry authors: Lawson CL, Chin AS, Benoff B, Yung BH

Function and Biology Details

Biochemical function:
Biological process:
Cellular component:

Structure analysis Details

Assemblies composition:
homo dimer (preferred)
homo tetramer
Entry contents:
1 distinct polypeptide molecule
Trp operon repressor Chains: A, B, D, E
Molecule details ›
Chains: A, B, D, E
Length: 107 amino acids
Theoretical weight: 12.24 KDa
Source organism: Escherichia coli
Expression system: Escherichia coli BL21(DE3)
  • Canonical: P0A881 (Residues: 2-108; Coverage: 99%)
Gene names: JW4356, b4393, rtrY, trpR
Sequence domains: Trp repressor protein
Structure domains: TrpR-like

Ligands and Environments

2 bound ligands:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: NSLS BEAMLINE X26C
Spacegroup: P43
Unit cell:
a: 81.348Å b: 81.348Å c: 72.687Å
α: 90° β: 90° γ: 90°
R R work R free
0.167 0.164 0.219
Expression system: Escherichia coli BL21(DE3)