Micrococcin P1 is a macrocyclic thiopeptide originally isolated from Micrococcus sp. by Su (Oxford) in 1948 and is considered the founding member of the thiopeptide antibiotic family. It was purified by Heatley and Doery but the producing strain was lost, causing a hiatus in research of this antibiotic family until the discovery of the related thiocillins in 1976. Its precise structure remained undefined until 2010 when researchers at University of British Columbia (Vancouver, BC) synthesized a substance that was spectroscopically and polarimetrically identical to the natural product.