5AY6:
reference: Structural insights into bacterial flagellar hooks similarities and specificities., Yoon YH, Barker CS, Bulieris PV, Matsunami H, Samatey FA, Sci Rep. 2016 Oct 19;6:35552. doi: 10.1038/srep35552. PMID: 27759043

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