› 6a4y

X-ray diffraction
1.92Å resolution

Crystal structure of bovine lactoperoxidase with partial occupancies of iodide and SCN- ions at the substrate binding site on the distal heme side at 1.92 A resolution

Released:
DOI: 10.2210/pdb6a4y/pdb
PDB entry 6a4y coloured by chain, front view.
PDB entry 6a4y coloured by chain, side view.
PDB entry 6a4y coloured by chain, top view.
Source organism: Bos taurus
Entry authors: Singh PK, Sirohi HV, kaur P, Sharma S, Singh TP

Function and Biology Details

Reaction catalysed: 
2 phenolic donor + H(2)O(2) = 2 phenoxyl radical of the donor + 2 H(2)O
Biochemical function:
Biological process:
Cellular component:
  • not assigned
Sequence domains:

Structure analysis Details

Assembly composition:
monomeric (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-160329 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecules (2 distinct):
Lactoperoxidase Chain: A
Molecule details ›
Chain: A
Length: 595 amino acids
Theoretical weight: 67.85 KDa
Source organism: Bos taurus
UniProt:
  • Canonical: P80025 (Residues: 118-712; Coverage: 86%)
Gene name: LPO
Sequence domains: Animal haem peroxidase
Structure domains: Haem peroxidase domain superfamily, animal type

Ligands and Environments


Cofactor: Ligand HEM 1 x HEM
Carbohydrate polymer : NEW Components: NAG
Carbohydrate polymer
5 bound ligands:
Ligand NAG 3 x NAG
Ligand IOD 6 x IOD
Ligand CA 1 x CA
Ligand SCN 8 x SCN
Ligand OSM 1 x OSM
1 modified residue:
Ligand SEP 1 x SEP

Experiments and Validation Details

Entry percentile scores
X-ray source: ESRF BEAMLINE ID29
Spacegroup: P21
Unit cell:
a: 53.74Å b: 79.8Å c: 65.18Å
α: 90° β: 91.43° γ: 90°
R-values:
R R work R free
0.225 0.222 0.279

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