2WLB:
reference: Structural and thermodynamic characterization of the adrenodoxin-like domain of the electron-transfer protein Etp1 from Schizosaccharomyces pombe., Muller JJ, Hannemann F, Schiffler B, Ewen KM, Kappl R, Heinemann U, Bernhardt R, J Inorg Biochem. 2011 Apr 9;105(7):957-965. PMID: 21536008

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