1NC1:
reference: Structure of Escherichia coli 5'-methylthioadenosine/ S-adenosylhomocysteine nucleosidase inhibitor complexes provide insight into the conformational changes required for substrate binding and catalysis., Lee JE, Cornell KA, Riscoe MK, Howell PL, J Biol Chem 2003 Mar 7;278(10):8761-70. PMID: 12496243

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