4h3z

X-ray diffraction
2.15Å resolution

Crystal structure of a symmetric dimer of a tRNA (guanine-(N(1)-)-methyltransferase from Burkholderia phymatum bound to S-adenosyl homocystein in both half-sites

Released:

Function and Biology Details

Reaction catalysed:
S-adenosyl-L-methionine + guanine(37) in tRNA = S-adenosyl-L-homocysteine + N(1)-methylguanine(37) in tRNA
Biological process:
Cellular component:

Structure analysis Details

Assembly composition:
homo dimer (preferred)
PDBe Complex ID:
PDB-CPX-109655 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
tRNA (guanine-N(1)-)-methyltransferase Chains: A, B
Molecule details ›
Chains: A, B
Length: 276 amino acids
Theoretical weight: 30.79 KDa
Source organism: Paraburkholderia phymatum STM815
Expression system: Escherichia coli
UniProt:
  • Canonical: B2JF31 (Residues: 1-255; Coverage: 100%)
Gene names: Bphy_0771, trmD
Sequence domains: tRNA (Guanine-1)-methyltransferase
Structure domains:

Ligands and Environments


Cofactor: Ligand SAH 2 x SAH
1 bound ligand:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: RIGAKU FR-E+ SUPERBRIGHT
Spacegroup: C2221
Unit cell:
a: 58.85Å b: 188.09Å c: 127.68Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.189 0.186 0.228
Expression system: Escherichia coli