The crystal structure of lactate oxidase

Experimental Data Snapshot

  • Resolution: 2.10 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.200 
  • R-Value Observed: 0.201 

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This is version 1.3 of the entry. See complete history


The 2.1 A Structure of Aerococcus Viridans L-Lactate Oxidase (Lox).

Leiros, I.Wang, E.Rasmussen, T.Oksanen, E.Repo, H.Petersen, S.B.Heikinheimo, P.Hough, E.

(2006) Acta Crystallogr Sect F Struct Biol Cryst Commun 62: 1185

  • DOI: https://doi.org/10.1107/S1744309106044678
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    The crystal structure of L-lactate oxidase (LOX) from Aerococcus viridans has been determined at 2.1 A resolution. LOX catalyzes the flavin mononucleotide (FMN) dependent oxidation of lactate to pyruvate and hydrogen peroxide. LOX belongs to the alpha-hydroxy-acid oxidase flavoenzyme family; members of which bind similar substrates and to some extent have conserved catalytic properties and structural motifs. LOX crystallized as two tightly packed tetramers in the asymmetric unit, each having fourfold symmetry. The present structure shows a conserved FMN coordination, but also reveals novel residues involved in substrate binding compared with other family members.

  • Organizational Affiliation

    NorStruct, University of Tromsø, N-9037 Tromsø, Norway.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
A, B, C, D, E
A, B, C, D, E, F, G, H
374Aerococcus viridansMutation(s): 0 
Find proteins for Q44467 (Aerococcus viridans (strain ATCC 11563 / DSM 20340 / CCUG 4311 / JCM 20461 / NBRC 12219 / NCTC 8251 / M1))
Explore Q44467 
Go to UniProtKB:  Q44467
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ44467
Sequence Annotations
  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Resolution: 2.10 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.200 
  • R-Value Observed: 0.201 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 117.34α = 90
b = 134.74β = 90
c = 185.56γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
XDSdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2006-10-23
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2023-12-13
    Changes: Data collection, Database references, Derived calculations, Other, Refinement description