5JK2:
reference: The Structure of Treponema pallidum Tp0751 (Pallilysin) Reveals a Non-canonical Lipocalin Fold That Mediates Adhesion to Extracellular Matrix Components and Interactions with Host Cells., Parker ML, Houston S, Petrosova H, Lithgow KV, Hof R, Wetherell C, Kao WC, Lin YP, Moriarty TJ, Ebady R, Cameron CE, Boulanger MJ, PLoS Pathog. 2016 Sep 28;12(9):e1005919. doi: 10.1371/journal.ppat.1005919., eCollection 2016 Sep. PMID: 27683203

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