4hx3

X-ray diffraction
2.7Å resolution

Crystal structure of Streptomyces caespitosus sermetstatin in complex with S. caespitosus snapalysin

Released:

Function and Biology Details

Reaction catalysed:
Hydrolyzes proteins with a preference for Tyr or Phe in the P1' position. Has no action on amino-acid p-nitroanilides.
Biochemical function:
Biological process:
Cellular component:

Structure analysis Details

Assembly composition:
hetero tetramer (preferred)
PDBe Complex ID:
PDB-CPX-157466 (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
Extracellular small neutral protease Chains: A, C, E, G, I, K
Molecule details ›
Chains: A, C, E, G, I, K
Length: 134 amino acids
Theoretical weight: 14.57 KDa
Source organism: Streptomyces caespitosus
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: P56406 (Residues: 2-132; Coverage: 99%)
Gene name: snpA
Sequence domains: Streptomyces extracellular neutral proteinase (M7) family
Structure domains: Collagenase (Catalytic Domain)
Subtilisin inhibitor domain-containing protein Chains: B, D, F, H, J, L
Molecule details ›
Chains: B, D, F, H, J, L
Length: 114 amino acids
Theoretical weight: 11.92 KDa
Source organism: Streptomyces caespitosus
Expression system: Escherichia coli
UniProt:
  • Canonical: Q9FDS0 (Residues: 29-141; Coverage: 97%)
Gene name: ScNPI
Sequence domains: Subtilisin inhibitor-like
Structure domains: Subtilisin inhibitor-like

Ligands and Environments

2 bound ligands:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ESRF BEAMLINE ID23-2
Spacegroup: P212121
Unit cell:
a: 116.54Å b: 121.81Å c: 130.67Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.195 0.195 0.242
Expression systems:
  • Escherichia coli BL21(DE3)
  • Escherichia coli