Esperamicin
![Structural formula of esperamicin A1](/Images/godic/202501/11/Esperamicin1147.png")
![Ball-and-stick model of the Esperamicin A1 molecule](/Images/godic/202501/11/Esperamicin_A1_3D_spacefill1147.png")
The esperamicins are chromoprotein enediyne antitumor antibiotics of bacterial origin. Esperamicin A1 is the most well studied compound in this class. Esperamcin A1 and the related enediyne calicheamicin are the two most potent antitumor agents known. The esperamicins are extremely toxic DNA splicing compounds.