3tpz

X-ray diffraction
2.1Å resolution

2.1 Angstrom crystal structure of the L114P mutant of E. Coli KsgA

Released:

Function and Biology Details

Reaction catalysed:
4 S-adenosyl-L-methionine + adenine(1518)/adenine(1519) in 16S rRNA = 4 S-adenosyl-L-homocysteine + N(6)-dimethyladenine(1518)/N(6)-dimethyladenine(1519) in 16S rRNA 

Structure analysis Details

Assembly composition:
monomeric (preferred)
PDBe Complex ID:
PDB-CPX-139325 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Ribosomal RNA small subunit methyltransferase A Chains: A, B
Molecule details ›
Chains: A, B
Length: 273 amino acids
Theoretical weight: 30.44 KDa
Source organism: Escherichia coli K-12
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: P06992 (Residues: 1-273; Coverage: 100%)
Gene names: JW0050, b0051, ksgA, rsmA
Sequence domains: Ribosomal RNA adenine dimethylase
Structure domains:

Ligands and Environments

2 bound ligands:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: RIGAKU MICROMAX-007
Spacegroup: C2
Unit cell:
a: 239.007Å b: 38.534Å c: 64.752Å
α: 90° β: 96.34° γ: 90°
R-values:
R R work R free
0.218 0.211 0.276
Expression system: Escherichia coli BL21(DE3)