Sodium-dependent phosphate transport protein 4 (SLC17A3)

Isoform 2: voltage-driven, multispecific, organic anion transporter able to transport para-aminohippurate (PAH), estrone sulfate, estradiol-17-beta-glucuronide, bumetanide, and ochratoxin A. Isoform 2 acts as urate efflux transporter on the apical side of renal proximal tubule and is likely to act as an exit route for organic anionic drugs as well as urate in vivo.

May be involved in actively transporting phosphate into cells via Na(+) cotransport. .