Complex of calicheamicin with DNA; graphic by Jarrod Smith. See
L.G. Paloma, J.A. Smith, W.J. Chazin and K.C. Nicolaou,
"Interaction of calicheamicin with duplex DNA: Role of the oligosaccharide
domain and identification of multiple binding modes", J. Am. Chem.
Soc. 116, 3697-3708 (1994).
