4p8q

X-ray diffraction
3.02Å resolution

Crystal Structure of Human Insulin Regulated Aminopeptidase with Alanine in Active Site

Released:

Function and Biology Details

Reaction catalysed:
Release of an N-terminal amino acid, Cys-|-Xaa-, in which the half-cystine residue is involved in a disulfide loop, notably in oxytocin or vasopressin. Hydrolysis rates on a range of aminoacyl arylamides exceed that for the cystinyl derivative, however.
Biochemical function:
Biological process:
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
homo dimer (preferred)
PDBe Complex ID:
PDB-CPX-577470 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecules (2 distinct):
Leucyl-cystinyl aminopeptidase, pregnancy serum form Chains: A, B
Molecule details ›
Chains: A, B
Length: 872 amino acids
Theoretical weight: 100.23 KDa
Source organism: Homo sapiens
Expression system: Spodoptera frugiperda
UniProt:
  • Canonical: Q9UIQ6 (Residues: 155-1025; Coverage: 85%)
Gene names: LNPEP, OTASE
Sequence domains:
Structure domains:

Ligands and Environments

Carbohydrate polymer : NEW Components: NAG
3 bound ligands:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: AUSTRALIAN SYNCHROTRON BEAMLINE MX2
Spacegroup: P21
Unit cell:
a: 68.323Å b: 256.051Å c: 71.132Å
α: 90° β: 115.12° γ: 90°
R-values:
R R work R free
0.193 0.19 0.25
Expression system: Spodoptera frugiperda