Gromphadorhina portentosa

Epoxide rings of alkene and arene compounds are hydrated to form trans-diols. The enzymes that catalyze the addition of a molecule of water to an epoxide ring to yield diols are called epoxide hydrolases (also known as epoxide hydrases). Epoxide hydrolase activity has been detected in numerous species of insects. Enzymatic epoxide hydration of certain cyclodiene insecticides and their analogs has been demonstrated in the housefly, blowfly (Calliphora erythrocephala), yellow mealworm (Tenebrio molitor), Madagascar cockroach (Gromphadorhina portentosa), southern army worm (Spodoptera eridania), and red flour beetle (Tribolium castaneum). Epoxide hydrolase is also important in the metabolism of juvenile... 

An active phosphotransferase, requiring ATP and Mg, and catalyzing the phosphorylation of -nitrophenol has been demonstrated in the lOO.OOOg supernatants of gut tissues of the Madagascar cockroach (Gromphadorhina portentosa), tobacco hornworm (M. sexta) larvae and in whole houseflies (H. domestica) (21,30) in K. portentosa it appears to constitute a major pathway for phenol metabolism (21,30). Although the mechanism of phosphorylation has not been elaborated, it is probable that ATP serves as the direct donor of the phosphate moiety transferred to the phenol (Figure 5). 

---