6FGZ:
reference: Structure of a mitochondrial fission dynamin in the closed conformation., Bohuszewicz O, Low HH, Nat Struct Mol Biol. 2018 Aug;25(8):722-731. doi: 10.1038/s41594-018-0097-6. Epub, 2018 Jul 30. PMID: 30061604

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