4,4'-Diapophytoene desaturase

4,4'-Diapophytoene desaturase (, dehydrosqualene desaturase, CrtN, 4,4'-diapophytoene:FAD oxidoreductase) is an enzyme with systematic name . This enzyme catalyses the following chemical reaction


 * 15-cis-4,4'-diapophytoene + 4 FAD $$\rightleftharpoons$$ all-trans-4,4'-diapolycopene + 4 FADH2 (overall reaction)
 * (1a) 15-cis-4,4'-diapophytoene + FAD $$\rightleftharpoons$$ all-trans-4,4'-diapophytofluene + FADH2
 * (1b) all-trans-4,4'-diapophytofluene + FAD $$\rightleftharpoons$$ all-trans-4,4'-diapo-zeta-carotene + FADH2
 * (1c) all-trans-4,4'-diapo-zeta-carotene + FAD $$\rightleftharpoons$$ all-trans-4,4'-diaponeurosporene + FADH2
 * (1d) all-trans-4,4'-diaponeurosporene + FAD $$\rightleftharpoons$$ all-trans-4,4'-diapolycopene + FADH2

This enzyme is typical of Staphylococcus aureus and some other bacteria such as Heliobacillus sp.