3EIP:
reference: Crystal structure of colicin E3 immunity protein: an inhibitor of a ribosome-inactivating RNase., Li C, Zhao D, Djebli A, Shoham M, Structure Fold Des 1999 Nov 15;7(11):1365-72. PMID: 10574790

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