PDBe 2zim

X-ray diffraction
2.1Å resolution

Pyrrolysyl-tRNA synthetase bound to adenylated pyrrolysine and pyrophosphate

Source organism: Methanosarcina mazei

Function and Biology Details

Reaction catalysed:
ATP + L-pyrrolysine + tRNA(Pyl) = AMP + diphosphate + L-pyrrolysyl-tRNA(Pyl)
Biochemical function:
Biological process:
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
homo dimer (preferred)
Entry contents:
1 distinct polypeptide molecule
Pyrrolysine--tRNA ligase Chain: A
Molecule details ›
Chain: A
Length: 291 amino acids
Theoretical weight: 33.42 KDa
Source organism: Methanosarcina mazei
Expression system: Escherichia coli
  • Canonical: Q8PWY1 (Residues: 185-454; Coverage: 60%)
Gene names: MM_1445, pylS
Sequence domains: tRNA synthetases class II core domain (F)
Structure domains:

Ligands and Environments

3 bound ligands:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: OTHER
Spacegroup: P64
Unit cell:
a: 105.07Å b: 105.07Å c: 70.262Å
α: 90° β: 90° γ: 120°
R R work R free
0.188 0.186 0.228
Expression system: Escherichia coli