4YNA:
reference: Crystal structures of YfiR from Pseudomonas aeruginosa in two redox states., Yang X, Yang XA, Xu M, Zhou L, Fan Z, Jiang T, Biochem Biophys Res Commun. 2015 Apr 4. pii: S0006-291X(15)00628-2. doi:, 10.1016/j.bbrc.2015.03.160. PMID: 25849887

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