4ZEM:
reference: Architecture of the eIF2B regulatory subcomplex and its implications for the regulation of guanine nucleotide exchange on eIF2., Kuhle B, Eulig NK, Ficner R, Nucleic Acids Res. 2015 Sep 17. pii: gkv930. PMID: 26384431

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