6LNI:
reference: Cryo-EM structure of an amyloid fibril formed by full-length human prion protein., Wang LQ, Zhao K, Yuan HY, Wang Q, Guan Z, Tao J, Li XN, Sun Y, Yi CW, Chen J, Li D, Zhang D, Yin P, Liu C, Liang Y, Nat Struct Mol Biol. 2020 Jun;27(6):598-602. doi: 10.1038/s41594-020-0441-5. Epub, 2020 Jun 8. PMID: 32514176

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