Carries out a dual function: signal transduction and activation of transcription . Mediates cellular responses to the cytokine KITLG/SCF and other growth factors. Binds to the GAS element and activates PRL-induced transcription. Positively regulates hematopoietic/erythroid differentiation.
Subcellular locations: Cytoplasm, Nucleus
Translocated into the nucleus in response to phosphorylation.