1JK0:
reference: Structure of the yeast ribonucleotide reductase Y2Y4 heterodimer., Voegtli WC, Ge J, Perlstein DL, Stubbe J, Rosenzweig AC, Proc Natl Acad Sci U S A 2001 Aug 28;98(18):10073-8. PMID: 11526233

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