terpene synthase activity pinene synthase activity https://github.com/geneontology/go-ontology/issues/26207 https://github.com/geneontology/go-ontology/issues/28199 MetaCyc:RXN-8563 beta-geraniolene synthase activity Catalysis of the reaction: geranyl diphosphate = pinene + diphosphate. This reaction can produce (1R,5R)-alpha-pinene, (1S,5S)-alpha-pinene, (1R,5R)-beta-pinene and (1S,5S)-beta-pinene. beta-pinene synthase activity alpha-pinene synthase activity molecular_function RHEA:25496 EC:4.2.3.122 MetaCyc:RXN-8564 EC:4.2.3.120 EC:4.2.3.121 RHEA:32575 RHEA:32579 MetaCyc:RXN-5106 MetaCyc:RXN-5107 RHEA:25488 EC:4.2.3.119 GO:0050550 (-)-(1S,5S)-pinene synthase activity