It has been suggested that this gene family be designated tps (for terpene synthase) [1]. It has been split into six subgroups on the basis of phylogeny, called tpsa-tpsf. tpsa includes vetispiridiene synthase Swiss:Q39979, 5-epi- aristolochene synthase, Swiss:Q40577 and (+)-delta-cadinene synthase Swiss:P93665. tpsb includes (-)-limonene synthase, Swiss:Q40322. tpsc includes kaurene synthase A, Swiss:O04408. tpsd includes taxadiene synthase, Swiss:Q41594, pinene synthase, Swiss:O24475 and myrcene synthase, Swiss:O24474. tpse includes kaurene synthase B. tpsf includes linalool synthase.

1: Monoterpene synthases from grand fir (Abies grandis). cDNA isolation, characterization, and functional expression of myrcene synthase, (-)-(4S)-limonene synthase, and (-)-(1S,5S)-pinene synthase. Bohlmann J, Steele CL, Croteau R; J Biol Chem 1997;272:21784-21792. PMID:9268308