ATNRT1:2 (NITRATE TRANSPORTER 1:2); calcium ion binding / transporter. similar to nitrate transporter, putative [Arabidopsis thaliana] (TAIR:AT1G27040.1); similar to nitrate transporter, putative [Arabidopsis thaliana] (TAIR:AT1G27040.2); similar to unnamed protein product [Vitis vinifera] (GB:CAO41029.1); similar to Os06g0581000 [Oryza sativa (japonica cultivar-group)] (GB:NP_001057937.1); contains InterPro domain TGF-beta receptor, type I/II extracellular region; (InterPro:IPR000109); contains InterPro domain MFS general substrate transporter (InterPro:IPR016196)