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Pitx1 | Pituitary homeobox 1; Sequence-specific transcription factor that binds gene promoters and activates their transcription. May play a role in the development of anterior structures, and in particular, the brain and facies and in specifying the identity or structure of hindlimb. Can independently activate and synergize with PIT-1 on pituitary-specific target gene promoters, thus may subserve functions in generating both precursor and specific cell phenotypes in the anterior pituitary gland and in several other organs. Can activate pituitary transcription of the proopiomelanocortin gene. (315 aa) | ||||
Spz1 | Spermatogenic leucine zipper protein 1; Transcription factor that binds to the DNA sequence 5'- CANNTG-3'(E box) and the G-box motif. Directly binds to a guanine-rich region of the PCNA promoter and up-regulates its expression which in turn induces cell transformation and tumor formation. May play an important role in the regulation of cell proliferation and differentiation during spermatogenesis. (378 aa) |