ID 4.2.3.114 DE gamma-terpinene synthase. CA (2E)-geranyl diphosphate = diphosphate + gamma-terpinene. CC -!- Isolated from Thymus vulgaris (thyme), Citrus limon (lemon), Citrus CC unshiu (satsuma) and Origanum vulgare (oregano). CC -!- The reaction involves a 1,2-hydride shift. CC -!- The 5-pro-S hydrogen of geranyl diphosphate is lost. CC -!- Traces of several other monoterpenoids are formed in addition to CC gamma-terpinene. DR A0A0M3Q1Q3, GTPS1_THYVU; R4JND9, GTPS3_THYCA; R4JGL8, GTPSB_THYCA; DR R4JQT5, GTPSC_THYCA; Q8L5K4, GTPS_CITLI ; E2E2P0, GTPS_ORIVU ; DR G8H5N0, TPS17_SOLHA; G5CV52, TPS17_SOLLC; A0A1D6LTV0, TPS26_MAIZE; DR W6HUT3, TPS7_HEDCO ; //