The enzyme arabinonate dehydratase () catalyzes the chemical reaction
This enzyme belongs to the family of lyases, specifically the hydro-lyases, which cleave carbon-oxygen bonds. The systematic name of this enzyme class is <small>D</small>-arabinonate hydro-lyase (2-dehydro-3-deoxy-<small>D</small>-arabinonate-forming). This enzyme is also called <small>D</small>-arabinonate hydro-lyase.