2QN6:
reference: Structure of an archaeal heterotrimeric initiation factor 2 reveals a nucleotide state between the GTP and the GDP states., Yatime L, Mechulam Y, Blanquet S, Schmitt E, Proc Natl Acad Sci U S A. 2007 Nov 20;104(47):18445-50. Epub 2007 Nov 13. PMID: 18000047

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