ATP binding / aminoacyl-tRNA ligase/ histidine-tRNA ligase/ nucleotide binding. similar to ATHRS1 (HISTIDYL-TRNA SYNTHETASE 1), histidine-tRNA ligase [Arabidopsis thaliana] (TAIR:AT3G46100.1); similar to unnamed protein product [Vitis vinifera] (GB:CAO18198.1); contains InterPro domain Aminoacyl-tRNA synthetase, class II (G, H, P and S); (InterPro:IPR002314); contains InterPro domain Histidyl-tRNA synthetase; (InterPro:IPR015805); contains InterPro domain Aminoacyl-tRNA synthetase, class II; (InterPro:IPR006195)