3C3V:
reference: Crystal structure of Ara h 3, a major allergen in peanut., Jin T, Guo F, Chen YW, Howard A, Zhang YZ, Mol Immunol. 2009 May;46(8-9):1796-804. Epub 2009 Feb 28. PMID: 19251323

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