3DL5:
reference: Explaining an unusually fast parasitic enzyme: folate tail-binding residues dictate substrate positioning and catalysis in Cryptosporidium hominis thymidylate synthase., Martucci WE, Vargo MA, Anderson KS, Biochemistry. 2008 Aug 26;47(34):8902-11. Epub 2008 Aug 2. PMID: 18672899

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