1) Cancer research 
Kedarcidin is a chromoprotein antibiotic with anticancer activity first isolated from an Actinomycete in 1992, comprising an ansa-bridged enediyne chromophore (shown) as well as an apoprotein that serves to stabilize this potent cytotoxin in the producing organism. Like other members of the enediyne antitumor antibiotic family—so named for the n...