PDBe 1n2v

X-ray diffraction
2.1Å resolution

Crystal Structure of TGT in complex with 2-Butyl-5,6-dihydro-1H-imidazo[4,5-d]pyridazine-4,7-dione


Function and Biology Details

Reaction catalysed:
Guanine(34) in tRNA + 7-aminomethyl-7-carbaguanine = 7-aminomethyl-7-carbaguanine(34) in tRNA + guanine
Biological process:
Cellular component:
  • not assigned

Structure analysis Details

Assemblies composition:
monomeric (preferred)
homo dimer
Entry contents:
1 distinct polypeptide molecule
Queuine tRNA-ribosyltransferase Chain: A
Molecule details ›
Chain: A
Length: 386 amino acids
Theoretical weight: 42.93 KDa
Source organism: Zymomonas mobilis
Expression system: Escherichia coli BL21(DE3)
  • Canonical: P28720 (Residues: 1-386; Coverage: 100%)
Gene names: ZMO0363, tgt
Sequence domains: Queuine tRNA-ribosyltransferase
Structure domains: Queuine tRNA-ribosyltransferase-like

Ligands and Environments

2 bound ligands:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: RIGAKU RU300
Spacegroup: C2
Unit cell:
a: 91.06Å b: 64.38Å c: 70.77Å
α: 90° β: 96.5° γ: 90°
R R work R free
0.188 0.188 0.233
Expression system: Escherichia coli BL21(DE3)