› 8ing

X-ray diffraction
1.98Å resolution

Structure of the ternary complex of lactoperoxidase with substrate nitric oxide (NO) and product nitrite ion (NO2) at 1.98 A resolution

Released:
DOI: 10.2210/pdb8ing/pdb
PDB entry 8ing coloured by chain, front view.
PDB entry 8ing coloured by chain, side view.
PDB entry 8ing coloured by chain, top view.
Source organism: Capra hircus
Entry authors: Ahmad MI, Viswanathan V, Kumar M, Singh RP, Singh AK, Sinha M, Kaur P, Sharma 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-105074 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecules (2 distinct):
Lactoperoxidase Chain: A
Molecule details ›
Chain: A
Length: 595 amino acids
Theoretical weight: 67.65 KDa
Source organism: Capra hircus
UniProt:
  • Canonical: A0A452E9Y6 (Residues: 118-712; Coverage: 86%)
Gene name: LPO
Sequence domains: Animal haem peroxidase

Ligands and Environments


Cofactor: Ligand HEM 1 x HEM
Carbohydrate polymer : NEW Components: NAG
Carbohydrate polymer
10 bound ligands:
Ligand NAG 3 x NAG
Ligand NO 2 x NO
Ligand NO2 1 x NO2
Ligand NO3 7 x NO3
Ligand SCN 4 x SCN
Ligand EDO 3 x EDO
Ligand IOD 13 x IOD
Ligand CA 1 x CA
Ligand OSM 1 x OSM
Ligand NA 2 x NA
1 modified residue:
Ligand SEP 1 x SEP

Experiments and Validation Details

Entry percentile scores
X-ray source: ESRF BEAMLINE BM14
Spacegroup: P21
Unit cell:
a: 54.052Å b: 80.342Å c: 76.121Å
α: 90° β: 102.82° γ: 90°
R-values:
R R work R free
0.186 0.183 0.234

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