2CJB:
reference: Structure of the unusual seryl-tRNA synthetase reveals a distinct zinc-dependent mode of substrate recognition., Bilokapic S, Maier T, Ahel D, Gruic-Sovulj I, Soll D, Weygand-Durasevic I, Ban N, EMBO J. 2006 Jun 7;25(11):2498-509. Epub 2006 May 4. PMID: 16675947

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