Doctor's ordure of the day

A fungus that grows on horse manure is the unlikely source of a novel protein-based antibiotic that might help medicinal chemists develop novel products for beating bacterial drug resistance. Microbiologists and molecular biologists at the Institute of Microbiology at ETH Zurich, Switzerland and colleagues at the University of Bonn, Germany, named the newly discovery antibiotic copsin. Mycologist Markus Aebi and colleagues unearthed copsin from the common inky cap mushroom Coprinopsis cinerea, which grows on horse manure.