1YPV:
reference: Structure of human thymidylate synthase under low-salt conditions., Lovelace LL, Minor W, Lebioda L, Acta Crystallogr D Biol Crystallogr. 2005 May;61(Pt 5):622-7. Epub 2005, Apr 20. PMID: 15858273

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