3B8E:
reference: Crystal structure of the sodium-potassium pump., Morth JP, Pedersen BP, Toustrup-Jensen MS, Sorensen TL, Petersen J, Andersen JP, Vilsen B, Nissen P, Nature. 2007 Dec 13;450(7172):1043-9. PMID: 18075585

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