1DAX:
reference: Determination of the structure of oxidised Desulfovibrio africanus ferredoxin I by 1H NMR spectroscopy and comparison of its solution structure with its crystal structure., Davy SL, Osborne MJ, Moore GR, J Mol Biol 1998 Apr 3;277(3):683-706. PMID: 9533888

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