High affinity uric acid-xanthine transporter in A.nidulans. Binds, but cannot transport ascorbic acid. Inhibited by excess of xanthin, uric acid and ascorbic acid, and by 100 um N,N-dicyclohexylcarbodiimide and 30 um carbonyl cyanide m-chlorophenyl-hydrazone. Measured in the absence of ascorbic acid. Highly expressed in roots. Disrupted chloroplast ultrastructure. Belongs to the nucleobase:cation symporter-2 (NCS2) (TC 2.A.40) family.