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EC 1.3.8.2 Details
EC number
1.3.8.2
Accepted name
4,4′-diapophytoene desaturase (4,4′-diapolycopene-forming)
Reaction
15-cis-4,4′-diapophytoene + 4 FAD = all-trans-4,4′-diapolycopene + 4 FADH2 (overall reaction);;(1a) 15-cis-4,4′-diapophytoene + FAD = all-trans-4,4′-diapophytofluene + FADH2;;(1b) all-trans-4,4′-diapophytofluene + FAD = all-trans-4,4′-diapo-ζ-carotene + FADH2;;(1c) all-trans-4,4′-diapo-ζ-carotene + FAD = all-trans-4,4′-diaponeurosporene + FADH2;;(1d) all-trans-4,4′-diaponeurosporene + FAD = all-trans-4,4′-diapolycopene + FADH2
Other name(s)
dehydrosqualene desaturase (ambiguous), CrtN (ambiguous), 4,4′-diapophytoene:FAD oxidoreductase (ambiguous), 15-cis-4,4′-diapophytoene:FAD oxidoreductase, 4,4′-diapophytoene desaturase (ambiguous)
Systematic name
15-cis-4,4′-diapophytoene:FAD oxidoreductase (4,4′-diapolycopene-forming)
Comment
The enzyme catalyses four successive dehydrogenations, resulting in production of 4,4′-diapolycopene. While the enzyme from Staphylococcus aureus was only shown to produce 4,4′-diaponeurosporene in vivo [4], it is able to catalyse the last reaction in vitro [5].
History
created 2011, modified 2011
EC Tree
3.6.1.4 created 1961, deleted 1965
3.6.1.32 created 1984, deleted 2000
3.6.1.33 created 1984, deleted 2000
3.6.1.34 created 1984, deleted 2000
3.6.1.35 created 1984, deleted 2000
3.6.1.36 created 1984, deleted 2000
3.6.1.37 created 1984, deleted 2000
3.6.1.38 created 1984, deleted 2000
3.6.1.46 created 2000, deleted 2003
3.6.1.47 created 2000, deleted 2003
3.6.1.48 created 2000, deleted 200
3.6.1.49 created 2000, deleted 2003
3.6.1.50 created 2000, deleted 2003
3.6.1.51 created 2000, deleted 2003