Enables threonine-tRNA ligase activity. Involved in threonyl-tRNA aminoacylation. Located in cytoplasm. Is expressed in several structures, including alimentary system; brain; integumental system; liver; and sensory organ. Human ortholog(s) of this gene implicated in nonphotosensitive trichothiodystrophy 7. Orthologous to human TARS1 (threonyl-tRNA synthetase 1). [provided by Alliance of Genome Resources, Apr 2022]