At the molecular level, electrical current across cell membranes ﬂows through three unique classes of integral membrane proteins (see Chapter 2): ion channels, electrogenic ion transporters, and electrogenic ion pumps.1
later it is said:
One class of electrogenic transporters includes the adenosine triphosphate (ATP)–dependent ion pumps.2
Is there any fundamental difference between "electrogenic" ion transporter and "electrogenic" ion pump, considering the fact that denosine triphosphate (ATP)–dependent ion pumps are also included in the former?
From this site ,Secondary active transporters are electrogenic, so if I consider those as electrogenic ion transporters , then also iam still confused why sodium potassium pump is in the category of ion transporter but not in ion pump.