Anti-TATA binding protein TBP Antibody Picoband®

TBP, TATA-binding protein, is a general transcription factor that binds specifically to a DNA sequence called the TATA box. The TBP gene is mapped to 6q27. This DNA sequence is found about 35 base pairs upstream of the transcription start site in some eukaryotic gene promoters. TBP, along with a variety of TBP-associated factors, make up the TFIID, a general transcription factor that in turn makes up part of the RNA polymerase II preinitiation complex. As one of the few proteins in the preinitiation complex that binds DNA in a sequence-specific manner, it helps position RNA polymerase II over the transcription start site of the gene. However, it is estimated that only 10-20% of human promoters have TATA boxes. Therefore, TBP is probably not the only protein involved in positioning RNA polymerase II.

TATA-box-binding protein; TATA sequence-binding protein; TATA-binding factor; TATA-box factor; Transcription initiation factor TFIID TBP subunit; Tbp; Tfiid

General transcription factor that functions at the core of the DNA-binding multiprotein factor TFIID. Binding of TFIID to the TATA box is the initial transcriptional step of the pre- initiation complex (PIC), playing a role in the activation of eukaryotic genes transcribed by RNA polymerase II. Component of a BRF2-containing transcription factor complex that regulates transcription mediated by RNA polymerase III. Component of the transcription factor SL1/TIF-IB complex, which is involved in the assembly of the PIC (pre-initiation complex) during RNA polymerase I-dependent transcription. The rate of PIC formation probably is primarily dependent on the rate of association of SL1 with the rDNA promoter. SL1 is involved in stabilization of nucleolar transcription factor 1/UBTF on rDNA.

1. Bauer, P., Laccone, F., Rolfs, A., Wullner, U., Bosch, S., Peters, H., Liebscher, S., Scheible, M., Epplen, J. T., Weber, B. H. F., Holinski-Feder, E., Weirich-Schwaiger, H., Morris-Rosendahl, D. J., Andrich, J., Riess, O.Trinucleotide repeat expansion in SCA17/TBP in white patients with Huntington's disease-like phenotype.J. Med. Genet. 41: 230-232, 2004. 2. Stevanin, G., Fujigasaki, H., Lebre, A.-S., Camuzat, A., Jeannequin, C., Dode, C., Takahashi, J., San, C., Bellance, R., Brice, A., Durr, A.Huntington's disease-like phenotype due to trinucleotide repeat expansions in the TBP and JPH3 genes.Brain 126: 1599-1603, 2003. 3. Veenstra, G. J. C., Weeks, D. L., Wolffe, A. P.Distinct roles for TBP and TBP-like factor in early embryonic gene transcription in Xenopus.Science 290: 2312-2314, 2000.

Store at -20°C for one year from date of receipt. After reconstitution, at 4°C for one month. It can also be aliquotted and stored frozen at -20°C for six months. Avoid repeated freeze-thaw cycles.