5KNI:
reference: Tankyrase Sterile alpha Motif Domain Polymerization Is Required for Its Role in Wnt Signaling., Riccio AA, McCauley M, Langelier MF, Pascal JM, Structure. 2016 Sep 6;24(9):1573-1581. doi: 10.1016/j.str.2016.06.022. Epub 2016 , Aug 4. PMID: 27499439

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