1z3a

X-ray diffraction
2.03Å resolution

Crystal structure of tRNA adenosine deaminase TadA from Escherichia coli

Released:

Function and Biology Details

Reaction catalysed:
Adenine(34) in tRNA + H(2)O = hypoxanthine(34) in tRNA + NH(3)
Biological process:
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
homo dimer (preferred)
PDBe Complex ID:
PDB-CPX-159382 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
tRNA-specific adenosine deaminase Chains: A, B
Molecule details ›
Chains: A, B
Length: 168 amino acids
Theoretical weight: 18.86 KDa
Source organism: Escherichia coli
Expression system: Escherichia coli BL21
UniProt:
  • Canonical: P68398 (Residues: 1-167; Coverage: 100%)
Gene names: JW2543, b2559, tadA, yfhC
Sequence domains: Cytidine and deoxycytidylate deaminase zinc-binding region
Structure domains: Cytidine Deaminase, domain 2

Ligands and Environments

1 bound ligand:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: NSLS BEAMLINE X29A
Spacegroup: I4122
Unit cell:
a: 100.232Å b: 100.232Å c: 159.576Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.176 0.176 0.216
Expression system: Escherichia coli BL21