4zi6

X-ray diffraction
2Å resolution

Crystal structure of leucine aminopeptidase from Helicobacter pylori

Released:
Model geometry
Fit model/data

Function and Biology Details

Reactions catalysed:
Release of an N-terminal amino acid, Xaa-|-Yaa-, in which Xaa is preferably Leu, but may be other amino acids including Pro although not Arg or Lys, and Yaa may be Pro. Amino acid amides and methyl esters are also readily hydrolyzed, but rates on arylamides are exceedingly low.
Release of an N-terminal amino acid, preferentially leucine, but not glutamic or aspartic acids.
Biochemical function:
Biological process:
Cellular component:

Structure analysis Details

Assembly composition:
homo hexamer (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-127741 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Cytosol aminopeptidase Chains: A, B, C, D, E, F
Molecule details ›
Chains: A, B, C, D, E, F
Length: 502 amino acids
Theoretical weight: 55.14 KDa
Source organism: Helicobacter pylori 26695
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: O25294 (Residues: 1-496; Coverage: 100%)
Gene names: HP_0570, pepA
Sequence domains:
Structure domains:

Ligands and Environments

3 bound ligands:
No modified residues

Experiments and Validation Details

wwPDB Validation report is not available for this entry.
X-ray source: AUSTRALIAN SYNCHROTRON BEAMLINE MX1
Spacegroup: P1
Unit cell:
a: 96.31Å b: 99.43Å c: 99.68Å
α: 75.26° β: 61.08° γ: 82.04°
R-values:
R R work R free
0.173 0.17 0.224
Expression system: Escherichia coli BL21(DE3)