In a collaboration, researchers from the Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures and the Helmholtz Center for Infection Research (HZI) have discovered two previously unknown natural products. Lavasamycin A and B are produced by the bacterium Streptomyces barkulensis subsp. lavasanensis, which was isolated from a soil sample collected in Lavasan, Iran, and characterized as a new subspecies at the DSMZ. The findings have been published in the Journal of Natural Products.