核苷转运蛋白，如slc28a3，调节多种细胞过程，包括神经传递、血管张力、细胞表面受体附近的腺苷浓度以及核苷药物的转运和代谢。SLC28A3对嘧啶核苷和嘌呤核苷具有广泛的特异性（Ritzel等人，2001【PubMed 11032837】。

Nucleoside transporters, such as SLC28A3, regulate multiple cellular processes, including neurotransmission, vascular tone, adenosine concentration in the vicinity of cell surface receptors, and transport and metabolism of nucleoside drugs. SLC28A3 shows broad specificity for pyrimidine and purine nucleosides (Ritzel et al., 2001 [PubMed 11032837]).[