1WTL:
reference: Comparison of crystal structures of two homologous proteins: structural origin of altered domain interactions in immunoglobulin light-chain dimers., Huang DB, Chang CH, Ainsworth C, Brunger AT, Eulitz M, Solomon A, Stevens FJ, Schiffer M, Biochemistry 1994 Dec 13;33(49):14848-57. PMID: 7993911

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