LIM/homeobox protein Lhx3 (LHX3)

Acts as a transcriptional activator. Binds to and activates the promoter of this alpha-glycoprotein gene, and synergistically enhances transcription from the prolactin promoter in collaboration with POU1F1/Pit-1 (By similarity).

Required for the establishment of the specialized cells of the pituitary gland and the nervous system. Involved in the development of interneurons and motor neurons in collaboration with LDB1 and ISL1.