2MPZ:
reference: Modeling an in-register, parallel "iowa" abeta fibril structure using solid-state NMR data from labeled samples with rosetta., Sgourakis NG, Yau WM, Qiang W, Structure. 2015 Jan 6;23(1):216-27. doi: 10.1016/j.str.2014.10.022. Epub 2014 Dec, 24. PMID: 25543257

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