(GenBank) histidyl-tRNA synthetase (Histidine-tRNA ligase) (YP_062587.1| histidyl-tRNA synthetase [Leifsonia xyli subsp. xyli str. CTCB07]; Q83FF5|SYH_TROWT Probable histidyl-tRNA synthetase (Histidine--tRNA ligase) (HisRS)). pfam00587, tRNA-synt_2b, tRNA synthetase class II core domain (G, H, P, S and T). hisS: histidyl-tRNA synthetase; High confidence in function and specificity