7nq4

X-ray diffraction
2.88Å resolution

Human tRNA guanine transglycosylase (TGT), RNA-bound covalent intermediate

Released:
Source organism: Homo sapiens

Function and Biology Details

Reaction catalysed:
Guanine(34) in tRNA + queuine = queuine(34) in tRNA + guanine
Biological process:
Cellular component:

Structure analysis Details

Assembly composition:
hetero hexamer (preferred)
PDBe Complex ID:
PDB-CPX-189798 (preferred)
Entry contents:
2 distinct polypeptide molecules
1 distinct RNA molecule
Macromolecules (3 distinct):
Queuine tRNA-ribosyltransferase catalytic subunit 1 Chain: A
Molecule details ›
Chain: A
Length: 405 amino acids
Theoretical weight: 44.25 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: Q9BXR0 (Residues: 1-403; Coverage: 100%)
Gene names: QTRT1, TGT, TGUT
Sequence domains: Queuine tRNA-ribosyltransferase
Queuine tRNA-ribosyltransferase accessory subunit 2 Chain: B
Molecule details ›
Chain: B
Length: 415 amino acids
Theoretical weight: 46.78 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: Q9H974 (Residues: 1-415; Coverage: 100%)
Gene names: QTRT2, QTRTD1
Sequence domains: Queuine tRNA-ribosyltransferase
RNA Chain: C
Molecule details ›
Chain: C
Length: 20 nucleotides
Theoretical weight: 6.42 KDa

Ligands and Environments

2 bound ligands:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: BESSY BEAMLINE 14.1
Spacegroup: C2
Unit cell:
a: 161.84Å b: 56.96Å c: 102.96Å
α: 90° β: 124.935° γ: 90°
R-values:
R R work R free
0.214 0.212 0.248
Expression system: Escherichia coli BL21(DE3)