Order	Reaction ID	Reaction
1	R00039	gentisic acid + oxygen → 3-maleylpyruvate + H<sup>+</sup>
2	R00040	3-maleylpyruvate → 3-fumarylpyruvate
3	R00041	3-fumarylpyruvate + H<sub>2</sub>O → fumarate + pyruvate + H<sup>+</sup>