As part of our ongoing microbial biodiscovery program, we routinely screen extracts from Australian terrestrial and marinederived microorganisms for antimycobacterial activity using the nonpathogenic Mtb surrogate M. bovis bacille Calmette-GuérinA screening program targeting growth-inhibitory activity against BCG prioritized Streptomyces sp. (CMBM0150) isolated from marine sediment collected off the Sunshine Coast, Queensland, Australia, in 2007