4-maleylacetoacetate isomerase

MALEYLAC ETC ACETATE ISOMERASE MALEYLACETOACETATE ISOMERASE Maleylpyruvate,... 

MALEYLACETOACETATE ISOMERASE MALEYLPYRUVATE ISOMERASE MALEYLPYRUVATE ISOMERASE Malic dehydrogenase,... 

The mercapturic acids and related compounds can then be exported from cells by an ATP-dependent export pump. Glutathione is a coenzyme for glyoxalase (Eq. 13-33), maleylacetoacetate isomerase (Eq. 13-20), and DDT dehydrochlorinase. The latter enzyme catalyzes elimination of HC1 from molecules of the insecticide and is especially active in DDT-resistant flies.3 Glutathione is said to be the specific factor eliciting the feeding reaction of Hydra that is, the release of glutathione from injured cells causes the little animal to engulf food. 

HPPD catalyzes an early step in a tyrosine degradation pathway [12] that is widely distributed in nature [13] and thus, as in animals, treatment of plants with inhibitors causes significant accumulation of tyrosine [8, 14]. HPP derived from transamination of tyrosine, is converted into HGA via HPPD, HGA is oxidized via HGA oxidase to 4-maleylacetoacetate, which is further degraded via 4-maleylacetoacetate isomerase and 4-fumarylacetoacetate lyase to fumarate and acetoacetate. In microbes the pathway provides assimilable carbon from tyrosine... 

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