6SDF:
reference: Crystal structure of the SH3 domain of growth factor receptor-bound protein 2., Bolgov A, Korban S, Luzik D, Zhemkov V, Kim M, Rogacheva O, Bezprozvanny I, Acta Crystallogr F Struct Biol Commun. 2020 Jun 1;76(Pt 6):263-270. doi:, 10.1107/S2053230X20007232. Epub 2020 Jun 5. PMID: 32510467

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