. "Catalysis of the reaction: geranyl diphosphate = (4S)-limonene + diphosphate." . . "(4S)-limonene synthase activity" . "(-)-(4S)-limonene synthase activity" . "4S-(-)-limonene synthase activity" . "geranyl-diphosphate diphosphate-lyase [cyclizing, (-)-(4S)-limonene-forming]" . "geranyldiphosphate diphosphate lyase (limonene forming)" . "geranyldiphosphate diphosphate lyase [cyclizing, (4S)-limonene-forming]" . . .