Function 
Glycolate oxidase (GOX) or hydroxyacid oxidase catalyzes the conversion of (S)-2-hydroxy acid and molecular oxygen to 2-oxo acid and hydrogen peroxide.  In higher plants, GOX catalyzes the oxidation of glycolate to glyoxylate.  GOX is part of the glyoxylate and dicarboxylate metabolism and uses FMN as a cofactor.  GOX catalyzes the first step in the utilization of glycolate as the sole source of carbon[1].  
  Disease 
Mutations in GOX result in isolated asymptotic hyperoxaluria type I[2].  
  Structural highlights 
The biological assembly of human glycolate oxidase 1 . GOX structure shows the  (Alpha Helices,
 Beta Strands ,
 Loops ,
Turns
) of an α-hydroxy acid oxidase and its [3]. Water molecules are shown as red spheres. 
 3D structures of glycolate oxidase
Glycolate oxidase 3D structures