Na-Na exchange by the Na pump requires ATP as well as ADP [proceedings].
D000244:Adenosine Diphosphate / Q000378:metabolism; D000255:Adenosine Triphosphate / Q000378:metabolism*; D001693:Biological Transport, Active; D004912:Erythrocytes / Q000378:metabolism*; D006801:Humans; D012964:Sodium / Q000378:metabolism*
D000244:Adenosine Diphosphate; D000255:Adenosine Triphosphate; D012964:Sodium