The primary product of this enzyme is 4,2',4',6'- tetrahydroxychalcone (also termed naringenin-chalcone or chalcone) which can under specific conditions spontaneously isomerize into naringenin. 405 MTVLEESADASSRRLAQRANGPATVLAIGTANPANVFEQSSYPDFYFDITNSQHMTELKLKFSRMCQKSGIKKRYMHLNSEILKANPSLCAYWEKSLDVRQDIAVVEVPKLGKEASLKAIKEWGQPKSKITHLVFCTTSGVDMPGADWALTKLLGLRPSVKRLMMYQQGCFAGGTVLRVAKDVAENNKGARVLVVCSEITCVTFRGPSETHLDSLVGQALFGDGAAAVILGSDPLPEENPCFELHWSGSNILPDSDGAIDGHLREVGLTFHLMKDVPGIISKNIGKVLNDAFRSAFDESGNAEDRPASVNDIFWIAHPGGPAILDQVEEKMKLAPEKMRATRDVLSEYGNMSSACVLFIMDHMRRMSAQNKLQTTGEGLDWGVLLGFGPGLTVETVLLKSIRLAC Chalcone synthase CHS Naringenin-chalcone synthase CHSY_EQUAR