2L4X:
reference: Three-Dimensional Structure and Determinants of Stability of the Iron-Sulfur Cluster Scaffold Protein IscU from Escherichia coli., Hae Kim J, Tonelli M, Kim T, Markley JL, Biochemistry. 2012 Jul 2. PMID: 22734684

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