1U0U | A:5-237; A:238-393; F:5-237; F:238-393; B:5-237; B:238-393; C:5-237; C:238-393; D:5-237; D:238-393; E:5-237; E:238-393 | AN ALDOL SWITCH DISCOVERED IN STILBENE SYNTHASES MEDIATES CYCLIZATION SPECIFICITY OF TYPE III POLYKETIDE SYNTHASES: PINE STILBENE SYNTHASE STRUCTURE |