5TD6:
reference: An RNA-Binding Multimer Specifies Nematode Sperm Fate., Aoki ST, Porter DF, Prasad A, Wickens M, Bingman CA, Kimble J, Cell Rep. 2018 Jun 26;23(13):3769-3775. doi: 10.1016/j.celrep.2018.05.095. PMID: 29949762

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