PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 31988244-4 2020 Here, using expression of two plant AMTs (AtAMT1;2 and AMT2) in budding yeast, we found that systematic replacements in the conserved twin-histidine motif, a hallmark of most AMTs/Meps/Rhs, alter substrate recognition, transport capacities, the nitrogen (N)-isotope selection and selectivity against K+ AMT-specific differences were found for histidine variants. histidine-pyridine-histidine-3 140-149 ammonium transporter 1;2 Arabidopsis thaliana 43-51 31988244-4 2020 Here, using expression of two plant AMTs (AtAMT1;2 and AMT2) in budding yeast, we found that systematic replacements in the conserved twin-histidine motif, a hallmark of most AMTs/Meps/Rhs, alter substrate recognition, transport capacities, the nitrogen (N)-isotope selection and selectivity against K+ AMT-specific differences were found for histidine variants. histidine-pyridine-histidine-3 344-353 ammonium transporter 1;2 Arabidopsis thaliana 43-51