The enzymatic conversion of homogentisic acid to 4-fumarylacetoacetic acid.
D000090:Acetoacetates; D005841:Gentisates; D006713:Homogentisic Acid; D009930:Organic Chemicals
D000090:Acetoacetates; D005841:Gentisates; D009930:Organic Chemicals; C016635:acetoacetic acid; D006713:Homogentisic Acid; C010925:2,5-dihydroxybenzoic acid
ACETOACETIC ACID; GENTISIC ACID