4ZLR:
reference: The Crystal Structure of the NHL Domain in Complex with RNA Reveals the Molecular Basis of Drosophila Brain-Tumor-Mediated Gene Regulation., Loedige I, Jakob L, Treiber T, Ray D, Stotz M, Treiber N, Hennig J, Cook KB, Morris Q, Hughes TR, Engelmann JC, Krahn MP, Meister G, Cell Rep. 2015 Nov 10;13(6):1206-20. doi: 10.1016/j.celrep.2015.09.068. Epub 2015, Oct 29. PMID: 26527002

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