4K82:
reference: Unique crystal structure of a novel surfactant protein from the foam nest of the frog Leptodactylus vastus., Cavalcante Hissa D, Arruda Bezerra G, Birner-Gruenberger R, Paulino Silva L, Uson I, Gruber K, Maciel Melo VM, Chembiochem. 2014 Feb 10;15(3):393-8. doi: 10.1002/cbic.201300726. Epub 2014 Jan , 17. PMID: 24442854

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