4CK4:
reference: Ovine beta-lactoglobulin at atomic resolution., Kontopidis G, Nordle Gilliver A, Sawyer L, Acta Crystallogr F Struct Biol Commun. 2014 Nov;70(Pt 11):1498-503. doi:, 10.1107/S2053230X14020950. Epub 2014 Oct 31. PMID: 25372816

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