4UW7:
reference: Structure of the Receptor-Binding Carboxy-Terminal Domain of the Bacteriophage T5 L-Shaped Tail Fibre with and without Its Intra-Molecular Chaperone., Garcia-Doval C, Caston JR, Luque D, Granell M, Otero JM, Llamas-Saiz AL, Renouard M, Boulanger P, van Raaij MJ, Viruses. 2015 Dec 8;7(12):6424-40. doi: 10.3390/v7122946. PMID: 26670244

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