A research team working in the scope of international consortium comprised of National Institute of Chemistry (Ljubljana), Biotechnical faculty from University of Ljubljana, SME Acies Bio d.o.o. (Ljubljana), Helmholtz institute, HIPS (Helmholtz-Institute for Pharmaceutical Research Saarland, Germany), Univesity of Strathclyde (Scotland) and Hospital Universario Marques de Valdecilla (Spain) has succeeded to construct a novel antibiotic carboxyamido-chelocardin belonging to a group of atypical tetracyclines produced by bacteria Amycolatopsis suplhurea.