Transcription factor involved in the specification of the lactotrope, somatotrope, and thyrotrope phenotypes in the developing anterior pituitary. Activates growth hormone and prolactin genes. Specifically binds to the consensus sequence 5'- TAAAT-3'. Belongs to the POU transcription factor family. Class- 1 subfamily. 2 isoforms of the human protein are produced by alternative splicing. Note: This description may include information from UniProtKB.
Protein type: Transcription factor; DNA binding protein
Biological Process: transcription from RNA polymerase II promoter; nuclear transport; regulation of insulin-like growth factor receptor signaling pathway; positive regulation of transcription, DNA-dependent; cell fate specification; positive regulation of inositol trisphosphate biosynthetic process; determination of adult life span; negative regulation of transcription from RNA polymerase II promoter; positive regulation of multicellular organism growth; negative regulation of cell proliferation; B cell differentiation; positive regulation of cell proliferation; somatotropin secreting cell development; positive regulation of transcription from RNA polymerase II promoter
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.