6FK0:
reference: Structural and functional analysis of cystatin E reveals enzymologically relevant dimer and amyloid fibril states., Dall E, Hollerweger JC, Dahms SO, Cui H, Haussermann K, Brandstetter H, J Biol Chem. 2018 Jul 2. pii: RA118.002154. doi: 10.1074/jbc.RA118.002154. PMID: 29967063

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