2FQN:
reference: Two conformational states in the crystal structure of the Homo sapiens cytoplasmic ribosomal decoding A site., Kondo J, Urzhumtsev A, Westhof E, Nucleic Acids Res. 2006 Feb 1;34(2):676-85. Print 2006. PMID: 16452297

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