Equilibrative nucleoside transporter 1 (SLC29A1)

Mediates both influx and efflux of nucleosides throughout the membrane (equilibrative transporter). It's sensitive (ES) to low concentrations of the inhibitor nitrobenzylmercaptopurine riboside (NBMPR) and is sodium-independent.

It has a greater affinity for adenosine. Inhibited by dipyridamole and dilazep (anticancer chemotherapeutics drugs).