Monoterpene synthase (mono-TPS) involved in the biosynthesis of monoterpenes natural products (PubMed:20447664). Catalyzes the conversion of (2E)-geranyl diphosphate (GPP) into linalool (PubMed:20447664). (2E)-geranyl diphosphate + H2O = diphosphate + linalool Binds 3 Mg(2+) or Mn(2+) ions per subunit. Secondary metabolite biosynthesis; terpenoid biosynthesis. Monomer. The Asp-Asp-Xaa-Xaa-Asp/Glu (DDXXD/E) motif is important for the catalytic activity, presumably through binding to Mg(2+). Belongs to the terpene synthase family. Tpsb subfamily.