5GRR:
reference: High resolution crystal structure of the catalytic domain of MCR-1., Ma G, Zhu Y, Yu Z, Ahmad A, Zhang H, Sci Rep. 2016 Dec 21;6:39540. doi: 10.1038/srep39540. PMID: 28000749

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