ID 5.5.1.22 DE (-)-bornyl diphosphate synthase. AN (-)-bornyl pyrophosphate cyclase. AN bornyl pyrophosphate synthase. CA (2E)-geranyl diphosphate = (2R,4S)-bornyl diphosphate. CC -!- The enzyme from Tanacetum vulgare (tansey) can also use (3S)-linalyl CC diphosphate or more slowly neryl diphosphate in vitro. CC -!- The reaction proceeds via isomeration of geranyl diphosphate to (3S)- CC linalyl diphosphate. CC -!- The oxygen and phosphorus originally linked to C-1 of geranyl CC diphosphate end up linked to C-2 of (-)-bornyl diphosphate. cf. CC EC 5.5.1.8. //