4G3A:
reference: The structure of the TOG-like domain of Drosophila melanogaster Mast/Orbit., De la Mora-Rey T, Guenther BD, Finzel BC, Acta Crystallogr Sect F Struct Biol Cryst Commun. 2013 Jul 1;69(Pt 7):723-9. doi:, 10.1107/S1744309113015182. Epub 2013 Jun 27. PMID: 23832196

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