1qx6

X-ray diffraction
2.7Å resolution

Crystal structure of Sortase B complexed with E-64

Released:

Function and Biology Details

Reaction catalysed:
The enzyme catalyzes a cell wall sorting reaction in which a surface protein with a sorting signal containing a NPXTN motif is cleaved between the Thr and Asn residue. The resulting threonine carboxyl end of the protein is covalently attached to a pentaglycine cross-bridge of peptidoglycan.
Biochemical function:
  • not assigned
Biological process:
  • not assigned
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
monomeric (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-173477 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Sortase B Chain: A
Molecule details ›
Chain: A
Length: 214 amino acids
Theoretical weight: 25.77 KDa
Source organism: Staphylococcus aureus
Expression system: Escherichia coli
UniProt:
  • Canonical: Q2FZE3 (Residues: 31-244; Coverage: 88%)
Gene names: SAOUHSC_01088, srtB
Sequence domains: Sortase domain
Structure domains: Sortase

Ligands and Environments

1 bound ligand:
1 modified residue:

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 19-BM
Spacegroup: C2221
Unit cell:
a: 57.63Å b: 66.589Å c: 101.799Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.235 0.235 0.282
Expression system: Escherichia coli