Structural highlights
Function
S22AC_RAT Electroneutral antiporter that translocates urate across the apical membrane of proximal tubular cells in exchange for monovalent organic or inorganic anions (PubMed:21074513). Involved in renal reabsorption of urate and helps maintaining blood levels of uric acid (PubMed:21074513). Mediates urate uptake by an exchange with organic anions such as (S)-lactate and nicotinate, and inorganic anion Cl(-) (PubMed:21074513). Other inorganic anions such as Br(-), I(-) and NO3(-) may also act as counteranions that exchange for urate (By similarity). Also mediates orotate tubular uptake coupled with nicotinate efflux and to a lesser extent with lactate efflux, therefore displaying a potential role in orotate renal reabsorption. Orotate transport is Cl(-)-dependent (By similarity).[UniProtKB:Q96S37][1]
References
- ↑ Sato M, Wakayama T, Mamada H, Shirasaka Y, Nakanishi T, Tamai I. Identification and functional characterization of uric acid transporter Urat1 (Slc22a12) in rats. Biochim Biophys Acta. 2011 Jun;1808(6):1441-7. PMID:21074513 doi:10.1016/j.bbamem.2010.11.002
