5.1.3.33 Biosynthetic gene cluster of cetoniacytone A, an unusual aminocyclitol from the endosymbiotic bacterium Actinomyces sp. Lu 9419 Actinomyces sp. 5.1.3.33 Biosynthetic gene cluster of cetoniacytone A, an unusual aminocyclitol from the endosymbiotic bacterium Actinomyces sp. Lu 9419 Actinomyces sp. Lu 9419