The equilibrative nucleoside transporter (ENT) family, also known as SLC29, is a group of plasmalemmal transport proteins which transport nucleoside substrates like adenosine into cells. There are four known ENTs, designated ENT1, ENT2, ENT3, and ENT4. ENTs are blocked by adenosine reuptake inhibitors like dipyridamole and dilazep, drugs used clinically for their vasodilatory properties.
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Equilibrative nucleoside transporter Wikipedia(Text) CC BY-SA