TMF1 Regulated Nuclear Protein 1 (TRNP1)

TRNP1 interacts with TMF1, When overexpressed, accelerates the proliferation rate of cells by enhancing their progression through key cell-cycle transition points. The TATA element, or TATA box, is a critical cis-acting regulatory element in many promoters transcribed by RNA polymerase II. The RNA polymerase II transcription factor D is a biochemically defined HeLa cell nuclear fraction containing a transcription factor activity that binds specifically to the TATA box. The DNA-binding subunit of TFIID is the TATA box-binding protein . TMF binds to the HIV-1 TATA element in gel-retardation assays and inhibits activation of the HIV-1 long terminal repeat by TBP in in vitro transcription assays. Sequence analysis of the TMF cDNA revealed leucine zipper motifs and homology in its DNA-binding domain with the phage-encoded DNA binding protein Ner.