1r9n

X-ray diffraction
2.3Å resolution

Crystal Structure of human dipeptidyl peptidase IV in complex with a decapeptide (tNPY) at 2.3 Ang. Resolution

Released:

Function and Biology Details

Reaction catalysed:
Release of an N-terminal dipeptide, Xaa-Yaa-|-Zaa-, from a polypeptide, preferentially when Yaa is Pro, provided Zaa is neither Pro nor hydroxyproline.
Biochemical function:
Biological process:
Cellular component:

Structure analysis Details

Assembly composition:
hetero tetramer (preferred)
PDBe Complex ID:
PDB-CPX-151019 (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (3 distinct):
Dipeptidyl peptidase 4 Chains: A, B, C, D
Molecule details ›
Chains: A, B, C, D
Length: 739 amino acids
Theoretical weight: 85.64 KDa
Source organism: Homo sapiens
Expression system: Spodoptera frugiperda
UniProt:
  • Canonical: P27487 (Residues: 39-766; Coverage: 95%)
Gene names: ADCP2, CD26, DPP4
Sequence domains:
Structure domains:
Neuropeptide Y Chains: E, F, G, H
Molecule details ›
Chains: E, F, G, H
Length: 10 amino acids
Theoretical weight: 1.1 KDa
Source organism: Macaca mulatta
Expression system: Not provided
UniProt:
  • Canonical: Q9XSW6 (Residues: 29-38; Coverage: 15%)
Gene name: NPY

Ligands and Environments

Carbohydrate polymer : NEW Components: NAG
1 bound ligand:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ALS BEAMLINE 5.0.3
Spacegroup: P21
Unit cell:
a: 122.606Å b: 122.701Å c: 145.405Å
α: 90° β: 114.88° γ: 90°
R-values:
R R work R free
0.213 0.211 0.251
Expression systems:
  • Spodoptera frugiperda
  • Not provided