Enables the transfer of a specific substance or related group of substances from one side of a membrane to the other, up the solute's concentration gradient. The transporter binds the solute and undergoes a series of conformational changes. Transport works equally well in either direction. [ GOC : mtg_transport https://www.worldcat.org/search?q=bn%3A0815340729 ]
active carrier activity
permease activity
pump activity
carrier activity