4wvj

X-ray diffraction
1.95Å resolution

Crystal structure of the Type-I signal peptidase from Staphylococcus aureus (SpsB) in complex with an inhibitor peptide (pep3).

Released:

Function and Biology Details

Structure analysis Details

Assembly composition:
hetero dimer (preferred)
PDBe Complex ID:
PDB-CPX-199638 (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (3 distinct):
Maltose/maltodextrin-binding periplasmic protein; Signal peptidase IB Chain: A
Molecule details ›
Chain: A
Length: 533 amino acids
Theoretical weight: 59.19 KDa
Source organisms: Expression system: Escherichia coli K-12
UniProt:
  • Canonical: P0AEX9 (Residues: 33-393; Coverage: 98%)
  • Canonical: Q5HHB9 (Residues: 26-175; Coverage: 79%)
Gene names: JW3994, SACOL0969, b4034, malE, spsB
Sequence domains:
inhibitor peptide (PEP3) Chain: D
Molecule details ›
Chain: D
Length: 14 amino acids
Theoretical weight: 1.16 KDa
Source organism: Staphylococcus aureus
Expression system: Not provided

Ligands and Environments

Carbohydrate polymer : NEW Components: GLC
No bound ligands
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: AUSTRALIAN SYNCHROTRON BEAMLINE MX2
Spacegroup: P212121
Unit cell:
a: 64.11Å b: 80.101Å c: 119.648Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.197 0.195 0.229
Expression systems:
  • Escherichia coli K-12
  • Not provided