3VU3:
reference: Post-Transcriptional Regulator Hfq Binds Catalase HPII: Crystal Structure of the Complex., Yonekura K, Watanabe M, Kageyama Y, Hirata K, Yamamoto M, Maki-Yonekura S, PLoS One. 2013 Nov 6;8(11):e78216. doi: 10.1371/journal.pone.0078216. PMID: 24223139

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