1ckn

X-ray diffraction
2.5Å resolution

STRUCTURE OF GUANYLYLATED MRNA CAPPING ENZYME COMPLEXED WITH GTP

Released:

Function and Biology Details

Reaction catalysed:
GTP + a 5'-diphospho-[mRNA] = diphosphate + a 5'-(5'-triphosphoguanosine)-[mRNA]
Biochemical function:
Biological process:
Cellular component:
  • not assigned

Structure analysis Details

Assemblies composition:
monomeric
hetero dimer (preferred)
homo dimer
Assembly name:
PDBe Complex ID:
PDB-CPX-182999 (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
mRNA-capping enzyme Chain: A
Molecule details ›
Chain: A
Length: 330 amino acids
Theoretical weight: 37.88 KDa
Source organism: Paramecium bursaria Chlorella virus 1
Expression system: Escherichia coli
UniProt:
  • Canonical: Q84424 (Residues: 1-330; Coverage: 100%)
Gene name: A103R
Sequence domains:
Structure domains:
mRNA-capping enzyme Chain: B
Molecule details ›
Chain: B
Length: 330 amino acids
Theoretical weight: 38.23 KDa
Source organism: Paramecium bursaria Chlorella virus 1
Expression system: Escherichia coli
UniProt:
  • Canonical: Q84424 (Residues: 1-330; Coverage: 100%)
Gene name: A103R
Sequence domains:
Structure domains:

Ligands and Environments

3 bound ligands:
1 modified residue:

Experiments and Validation Details

Entry percentile scores
X-ray source: SRS BEAMLINE PX9.6
Spacegroup: C2221
Unit cell:
a: 94.906Å b: 212.953Å c: 105.016Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.224 0.224 0.299
Expression system: Escherichia coli