The function of ENSG00000162366 (PDZK1IP1, PDZK1 interacting protein 1) is as follows. Auxiliary protein of electrogenic Na(+)-coupled sugar symporter SLC5A2/SGLT2 and SLC5A1/SGLT1 (PubMed:34880493, PubMed:37217492, PubMed:38057552). Essential for the transporter activity of SLC5A2/SGLT2 but not SLC5A1/SGLT1 (PubMed:37217492). {ECO:0000269|PubMed:34880493, ECO:0000269|PubMed:37217492, ECO:0000269|PubMed:38057552}.