4ND8:
reference: Turnover-Dependent Inactivation of the Nitrogenase MoFe-Protein at High pH., Yang KY, Haynes CA, Spatzal T, Rees DC, Howard JB, Biochemistry. 2014 Jan 21;53(2):333-43. doi: 10.1021/bi4014769. Epub 2014 Jan 6. PMID: 24392967

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