5LNK:
reference: Atomic structure of the entire mammalian mitochondrial complex I., Fiedorczuk K, Letts JA, Degliesposti G, Kaszuba K, Skehel M, Sazanov LA, Nature. 2016 Sep 5;538(7625):406-410. doi: 10.1038/nature19794. PMID: 27595392

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