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. 2017 Jul 21;313(5):H919–H930. doi: 10.1152/ajpheart.00131.2017

Fig. 3.

Fig. 3.

Model of a Na+ pump depicts the organization of the α- and-β subunits; as illustrated, the small β-subunit is glycosylated (hexoses shown in green). Also shown is the regulatory γ-subunit, phospholemman (PLM). Ouabain (at top) enters the cation transport pathway lactone ring first and binds close to one of the cation-binding sites in the pathway.