ATKT1 (Arabidopsis thaliana K+ uptake 1); potassium ion transmembrane transporter. Identical to Potassium transporter 1 (POT1) [Arabidopsis Thaliana] (GB:O22397;GB:O50043); similar to KUP6 (K+ uptake permease 6), potassium ion transmembrane transporter [Arabidopsis thaliana] (TAIR:AT1G70300.1); similar to potassium transporter, putative [Arabidopsis thaliana] (TAIR:AT5G14880.1); similar to KUP3 (K+ uptake permease 3), potassium ion transmembrane transporter [Arabidopsis thaliana] (TAIR:AT3G02050.1); similar to unnamed protein product [Vitis vinifera] (GB:CAO47093.1); similar to predicted protein [Physcomitrella patens subsp. patens] (GB:EDQ6