transcription factor of the STAT family. Plays a central role in IL4-mediated biological responses. Induces the expression of BCL2L1/BCL-X(L), which is responsible for the anti-apoptotic activity of IL4. May function in the differentiation of T helper 2 cells and class switch of immunoglobulins. Forms homo- or heterodimers that translocate into the nucleus where they regulate transcription. Note: This description may include information from UniProtKB.
Molecular Function: DNA binding; identical protein binding; protein phosphatase binding; sequence-specific DNA binding; transcription factor activity
Biological Process: cytokine and chemokine mediated signaling pathway; mammary gland epithelial cell proliferation; negative regulation of T-helper 2 type immune response; negative regulation of transcription from RNA polymerase II promoter; positive regulation of isotype switching to IgE isotypes; positive regulation of transcription from RNA polymerase II promoter; regulation of cell proliferation; response to cytokine stimulus; signal transduction; T-helper 1 cell lineage commitment