1CE3:
reference: Structure of a putative ancestral protein encoded by a single sequence repeat from a multidomain proteinase inhibitor gene from Nicotiana alata., Scanlon MJ, Lee MC, Anderson MA, Craik DJ, Structure Fold Des 1999 Jul 15;7(7):793-802. PMID: 10425681

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