4Q5P:
reference: A Compact Structure of Cytochrome c Trapped in a Lysine-Ligated State: Loop Refolding and Functional Implications of a Conformational Switch., Amacher JF, Zhong F, Lisi GP, Zhu MQ, Alden SL, Hoke KR, Madden DR, Pletneva EV, J Am Chem Soc. 2015 Jun 3. PMID: 26038984

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