› 3i12

X-ray diffraction
2.2Å resolution

The crystal structure of the D-alanyl-alanine synthetase A from Salmonella enterica subsp. enterica serovar Typhimurium str. LT2

Released:
DOI: 10.2210/pdb3i12/pdb
PDB entry 3i12 coloured by chain, front view.
PDB entry 3i12 coloured by chain, side view.
PDB entry 3i12 coloured by chain, top view.
Source organism: Salmonella enterica subsp. enterica serovar Typhimurium
Entry authors: Zhang R, Maltseva N, Papazisi L, Anderson W, Joachimiak A, Center for Structural Genomics of Infectious Diseases (CSGID)

Function and Biology Details

Reaction catalysed: 
ATP + 2 D-alanine = ADP + phosphate + D-alanyl-D-alanine
Biochemical function:
Biological process:
Cellular component:
Sequence domains:

Structure analysis Details

Assembly composition:
homo dimer (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-140984 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
D-alanine--D-alanine ligase A Chains: A, B, C, D
Molecule details ›
Chains: A, B, C, D
Length: 364 amino acids
Theoretical weight: 39.4 KDa
Source organism: Salmonella enterica subsp. enterica serovar Typhimurium
Expression system: Escherichia coli
UniProt:
  • Canonical: P0A1F0 (Residues: 1-364; Coverage: 100%)
Gene names: STM0380, ddlA
Sequence domains:
Structure domains:

Ligands and Environments

1 bound ligand:
Ligand ADP 4 x ADP
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 19-ID
Spacegroup: P212121
Unit cell:
a: 85.153Å b: 85.813Å c: 230.893Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.2 0.197 0.249
Expression system: Escherichia coli

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