PDBe 3ssw

X-ray diffraction
1.67Å resolution

E. coli trp aporepressor


Function and Biology Details

Structure analysis Details

Assembly composition:
homo dimer (preferred)
Entry contents:
1 distinct polypeptide molecule
Trp operon repressor Chains: N, R
Molecule details ›
Chains: N, R
Length: 107 amino acids
Theoretical weight: 12.24 KDa
Source organism: Escherichia coli K-12
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

No bound ligands

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: NSLS BEAMLINE X26C
Spacegroup: P21
Unit cell:
a: 35.692Å b: 54.335Å c: 56.945Å
α: 90° β: 103.21° γ: 90°
R R work R free
0.18 0.176 0.219
Expression system: Escherichia coli BL21(DE3)