1NCO:
reference: Crystal structure of neocarzinostatin, an antitumor protein-chromophore complex., Kim KH, Kwon BM, Myers AG, Rees DC, Science 1993 Nov 12;262(5136):1042-6. PMID: 8235619

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).