ID 4.2.3.9 DE aristolochene synthase. AN sesquiterpene cyclase. AN trans,trans-farnesyl diphosphate aristolochene-lyase. CA (2E,6E)-farnesyl diphosphate = (+)-aristolochene + diphosphate. CC -!- The initial internal cyclization produces the monocyclic intermediate CC germacrene A; further cyclization and methyl transfer converts the CC intermediate into aristolochene. CC -!- While in some species germacrene A remains as an enzyme-bound CC intermediate, it has been shown to be a minor product of the reaction CC in Penicillium roqueforti (see also EC 4.2.3.23). CC -!- Aristolochene is the likely parent compound for a number of CC sesquiterpenes produced by filamentous fungi. CC -!- Formerly EC 2.5.1.40 and EC 4.1.99.7. DR Q9UR08, ARIS_ASPTE ; W6Q4Q9, PRX2_PENRF ; Q03471, PRX2_PENRO ; DR B6H063, PRX2_PENRW ; A0A0A2JB87, TS1_PENEN ; //