4UQV:
reference: The crystal structure of archaeal serine hydroxymethyltransferase reveals idiosyncratic features likely required to withstand high temperatures., Angelucci F, Morea V, Angelaccio S, Saccoccia F, Contestabile R, Ilari A, Proteins. 2014 Sep 26. doi: 10.1002/prot.24697. PMID: 25257552

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