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.
Protein type: Transcription factor; DNA binding protein
Molecular Function: identical protein binding; signal transducer activity; DNA binding; sequence-specific DNA binding; calcium ion binding; protein phosphatase binding; transcription factor activity
Biological Process: T-helper 1 cell lineage commitment; transcription, DNA-dependent; negative regulation of T-helper 2 type immune response; response to cytokine stimulus; cytokine and chemokine mediated signaling pathway; mammary gland epithelial cell proliferation; positive regulation of transcription from RNA polymerase II promoter; negative regulation of transcription from RNA polymerase II promoter; signal transduction; positive regulation of isotype switching to IgE isotypes; regulation of cell proliferation
SS: The number of records in which this modification site was determined using site-specific methods. SS methods include amino acid sequencing, site-directed mutagenesis, modification site-specific antibodies, specific MS strategies, etc.