2PMD:
reference: New Insights into the Interactions of the Translation Initiation Factor 2 from Archaea with Guanine Nucleotides and Initiator tRNA., Nikonov O, Stolboushkina E, Nikulin A, Hasenohrl D, Blasi U, Manstein DJ, Fedorov R, Garber M, Nikonov S, J Mol Biol. 2007 Oct 19;373(2):328-36. Epub 2007 Aug 2. PMID: 17825838

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