1F0V:
reference: A domain-swapped RNase A dimer with implications for amyloid formation., Liu Y, Gotte G, Libonati M, Eisenberg D, Nat Struct Biol 2001 Mar;8(3):211-4. PMID: 11224563

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