› 3ssb

X-ray diffraction
1.8Å resolution

Structure of Insect Metalloproteinase Inhibitor in Complex with Thermolysin

Released:
DOI: 10.2210/pdb3ssb/pdb
PDB entry 3ssb coloured by chain, front view.
PDB entry 3ssb coloured by chain, side view.
PDB entry 3ssb coloured by chain, top view.
Source organisms:
Primary publication:
Structural evidence for standard-mechanism inhibition in metallopeptidases from a complex poised to resynthesize a peptide bond.
Arolas JL, Botelho TO, Vilcinskas A, Gomis-Rüth FX
Angew Chem Int Ed Engl 50 10357-60 (2011)
PMID: 21915964

Function and Biology Details

Reaction catalysed: 
Preferential cleavage: -|-Leu > -|-Phe.
Biochemical function:
Biological process:
Cellular component:
  • not assigned
Sequence domains:

Structure analysis Details

Assembly composition:
hetero trimer (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-133582 (preferred)
Entry contents:
3 distinct polypeptide molecules
Macromolecules (3 distinct):
Thermolysin Chains: A, B
Molecule details ›
Chains: A, B
Length: 316 amino acids
Theoretical weight: 34.36 KDa
Source organism: Bacillus thermoproteolyticus
UniProt:
  • Canonical: P00800 (Residues: 233-548; Coverage: 61%)
Gene name: npr
Sequence domains:
Structure domains:
IMPI alpha Chains: C, D
Molecule details ›
Chains: C, D
Length: 40 amino acids
Theoretical weight: 4.29 KDa
Source organism: Galleria mellonella
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: P82176 (Residues: 19-56; Coverage: 25%)
Gene name: IMPI
Sequence domains: Trypsin Inhibitor like cysteine rich domain
IMPI alpha Chains: I, J
Molecule details ›
Chains: I, J
Length: 32 amino acids
Theoretical weight: 3.68 KDa
Source organism: Galleria mellonella
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: P82176 (Residues: 57-88; Coverage: 21%)
Gene name: IMPI
Sequence domains: Trypsin Inhibitor like cysteine rich domain

Ligands and Environments

4 bound ligands:
Ligand GOL 3 x GOL
Ligand ZN 2 x ZN
Ligand CA 6 x CA
Ligand NA 2 x NA
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ESRF BEAMLINE ID23-1
Spacegroup: P21
Unit cell:
a: 45.64Å b: 78.37Å c: 92.29Å
α: 90° β: 90.08° γ: 90°
R-values:
R R work R free
0.159 0.159 0.193
Expression system: Escherichia coli BL21(DE3)

Quick links

Citations

1 review citation

Coevolution of parasitic fungi and insect hosts.
Joop et al. (2016)
8 other articles

4 mentions without citation

A unique network of attack, defence and competence on the outer membrane of the periodontitis pathogen Tannerella forsythia.
Książek et al. (2023)
3 more