4GYH:
reference: Analysis of mRNA recognition by human thymidylate synthase., Brunn ND, Dibrov SM, Kao MB, Ghassemian M, Hermann T, Biosci Rep. 2014 Dec 23;34(6). pii: e00168. doi: 10.1042/BSR20140137. PMID: 25423174

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