1EZL:
reference: Crystal structure of the disulfide bond-deficient azurin mutant C3A/C26A: how important is the S-S bond for folding and stability?, Bonander N, Leckner J, Guo H, Karlsson BG, Sjolin L, Eur J Biochem 2000 Jul;267(14):4511-9. PMID: 10880975

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