Enables protein kinase activator activity. Predicted to be involved in negative regulation of mitotic nuclear division; positive regulation of protein phosphorylation; and signal transduction. Predicted to act upstream of or within transmembrane receptor protein tyrosine kinase signaling pathway. Predicted to be located in cytosol. Predicted to be active in endosome and membrane. Is expressed in several structures, including adrenal gland; nervous system; nose; submandibular gland primordium; and vibrissa. Orthologous to human TOM1L1 (target of myb1 like 1 membrane trafficking protein). [provided by Alliance of Genome Resources, Apr 2022]