3DUI:
reference: Homodimeric chicken galectin CG-1B (C-14): Crystal structure and detection of unique redox-dependent shape changes involving inter- and intrasubunit disulfide bridges by gel filtration, ultracentrifugation, site-directed mutagenesis, and peptide mass fingerprinting., Lopez-Lucendo MF, Solis D, Saiz JL, Kaltner H, Russwurm R, Andre S, Gabius HJ, Romero A, J Mol Biol. 2009 Feb 20;386(2):366-78. Epub 2008 Sep 30. PMID: 18848566

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