2IWT:
reference: Structural basis for target protein recognition by the protein disulfide reductase thioredoxin., Maeda K, Hagglund P, Finnie C, Svensson B, Henriksen A, Structure. 2006 Nov;14(11):1701-10. PMID: 17098195

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