Predicted to enable non-membrane spanning protein tyrosine kinase activity. Involved in several processes, including T cell receptor signaling pathway; activation of phospholipase C activity; and positive regulation of cytokine production. Acts upstream of or within NK T cell differentiation. Predicted to be located in cytoplasm and nucleus. Is expressed in several structures, including hemolymphoid system; lung; male reproductive gland or organ; stomach mesentery; and vertebral axis musculature. Orthologous to human TXK (TXK tyrosine kinase). [provided by Alliance of Genome Resources, Apr 2022]