4ZBH:
reference: FlaF Is a beta-Sandwich Protein that Anchors the Archaellum in the Archaeal Cell Envelope by Binding the S-Layer Protein., Banerjee A, Tsai CL, Chaudhury P, Tripp P, Arvai AS, Ishida JP, Tainer JA, Albers SV, Structure. 2015 Apr 3. pii: S0969-2126(15)00079-9. doi:, 10.1016/j.str.2015.03.001. PMID: 25865246

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