1XER:
reference: Novel zinc-binding centre in thermoacidophilic archaeal ferredoxins., Fujii T, Hata Y, Wakagi T, Tanaka N, Oshima T, Nat Struct Biol 1996 Oct;3(10):834-7. PMID: 8836097

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