1JXG:
reference: The 1.6 A resolution crystal structure of a mutant plastocyanin bearing a 21-25 engineered disulfide bridge., Milani M, Andolfi L, Cannistraro S, Verbeet MP, Bolognesi M, Acta Crystallogr D Biol Crystallogr 2001 Nov;57(Pt 11):1735-8. PMID: 11679761

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