2ZCJ:
reference: AdoMet-dependent Methyl-transfer: Glu(119) Is Essential for DNA C5-Cytosine Methyltransferase M.HhaI., Shieh FK, Reich NO, J Mol Biol. 2007 Nov 9;373(5):1157-68. Epub 2007 Aug 19. PMID: 17897676

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