High-capacity urate transporter, which may play a role in the urate reabsorption by proximal tubules. May have a residual high-affinity, low-capacity glucose and fructose transporter activity. Transports urate at rates 45- to 60-fold faster than glucose. Does not transport galactose. May mediate small uptake of adenine but not of other nucleobases. urate(out) = urate(in) Belongs to the major facilitator superfamily. Sugar transporter (TC 2.A.1.1) family. High-capacity urate transporter that was first described as a fructose and glucose transporter. Also described in the literature as high-affinity and low-capacity glucose and fructose transporter (By similarity). However, another group could not confirm transporter activity for glucose or fructose (By similarity).