Aureonuclemycin, isolated from Staphylococcus aureus to obtain its biosynthetic gene cluster, exists in two forms: Type A and Type B. Aureonuclemycin A is a nucleoside antibiotic structurally similar to herbicides and contains adenine, while Aureonuclemycin B contains 5′-deoxyadenosine and exhibits antibacterial activity. Aureonuclemycin can be used in research on bacterial leaf blight in rice, citrus canker, and bacterial leaf spot in rice. [1] [2]