2TMK:
reference: Structure of thymidylate kinase reveals the cause behind the limiting step in AZT activation., Lavie A, Vetter IR, Konrad M, Goody RS, Reinstein J, Schlichting I, Nat Struct Biol 1997 Aug;4(8):601-4. PMID: 9253404

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