Peucemycin is a polyketide produced by Streptomyces peucetius, a Gram-positivefilamentous bacteria that also produces the anticancer compounds daunorubicin and doxorubicin.[1] This compound was elucidated from a cryptic biosynthetic gene cluster and is produced under temperature-specific conditions for bacterial growth (metabolite is present at 18 °C but not 28 °C).[2] Peucemycin has demonstrated bioactivity against growth of S. aureus, P. hauseri, and S. enterica and also is weakly active against cancer cell lines.[2] Peucemycin is biosynthesized through a Type 1 PKS system.[2]