3q8x

X-ray diffraction
2.7Å resolution

Structure of a toxin-antitoxin system bound to its substrate

Released:

Function and Biology Details

Reaction catalysed:
ATP + UDP-N-acetyl-alpha-D-glucosamine = ADP + UDP-N-acetyl-alpha-D-glucosamine 3'-phosphate
Biochemical function:
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
hetero tetramer (preferred)
PDBe Complex ID:
PDB-CPX-176233 (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
Antitoxin epsilon Chains: A, C
Molecule details ›
Chains: A, C
Length: 90 amino acids
Theoretical weight: 10.73 KDa
Source organism: Streptococcus pyogenes
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: Q57231 (Residues: 1-90; Coverage: 100%)
Sequence domains: Bacterial epsilon antitoxin
Structure domains: Helicase, Ruva Protein; domain 3
Toxin zeta Chains: B, D
Molecule details ›
Chains: B, D
Length: 287 amino acids
Theoretical weight: 32.44 KDa
Source organism: Streptococcus pyogenes
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: Q54944 (Residues: 1-287; Coverage: 100%)
Sequence domains: Zeta toxin
Structure domains: P-loop containing nucleotide triphosphate hydrolases

Ligands and Environments

2 bound ligands:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SLS BEAMLINE X10SA
Spacegroup: P212121
Unit cell:
a: 59.8Å b: 79.99Å c: 195.17Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.212 0.21 0.263
Expression system: Escherichia coli BL21(DE3)