Cellular localization of Tat-binding protein-1 (TBP-1) mRNA is studied in the rat central nervous system (CNS) by in situ hybridization histochemistry. TBP-1 is one of the molecules which interact with HIV Tat and influence HIV amplification. Also, TBP-1 is recognized as a component of a 19S regulatory subunit of the 26S proteasome which degrades ubiquitinated proteins and is essential for a re...

OBJECTIVES/HYPOTHESIS Paranasal sinus pneumatization in patients with cystic fibrosis (CF) is less extensive compared to the general population and seems to be correlated to CF genotype. Interestingly, in CF patients temporal bone pneumatization (TBP) is more extensive compared to the general population, and middle ear pathology is generally uncommon in CF. It is debated whether TBP is influenc...

In yeast cells, mutations in the TATA-binding protein (TBP) that disrupt the interaction with the TATA element or with TFIIA can selectively impair the response to acidic activator proteins. We analyzed the transcriptional properties of TBP derivatives in which residues that directly interact with TFIIB were replaced by alanines. Surprisingly, a derivative with a 50-fold defect in TBP-TFIIB-TAT...

Analysis of TBP gene sequences from a variety of species for clustering of short sequence motifs and for over- and underrepresentation of short sequence motifs suggests involvement of slippage in the recent evolution of the TBP N-terminal domains in metazoans, Acanthamoeba and wheat. AGC, GCA and CAG are overrepresented in TBP genes of other species, suggesting that opa arrays were amplified fr...

We have previously shown that the human papillomavirus E7 proteins bind to the cellular TATA box binding protein (TBP). In this paper we show that the HPV-18 E6 and the HPV-16 E2 proteins will also bind TBP in vitro. This feature of virus proteins is conserved across many viral types and we were interested in determining whether these HPV proteins interacted with the same conserved region of th...

The TATA-binding protein (TBP) in the TFIID complex binds specifically to the TATA-box to initiate the stepwise assembly of the preinitiation complex (PIC) for RNA polymerase II transcription. Transcriptional activators and repressors compete with general transcription factors at each step to influence the course of the assembly. To investigate this process, the TBP.TATA complex was titrated wi...

The Drosophila homeodomain protein Even-skipped (Eve) has previously been shown to function as a sequence-specific transcriptional repressor, and in vitro and in vivo experiments have shown that the protein can actively block basal transcription. However, the mechanism of repression is not known. Here, we present evidence establishing a direct interaction between Eve and the TATA-binding protei...

TATA binding protein (TBP), a universal transcription factor, is broadly required by nuclear RNA polymerases for the initiation of transcription. TBP contains a polymorphic polyglutamine tract in its N-terminal region, and expansion of this tract leads to spinocerebellar ataxia type 17 (SCA17), one of nine dominantly inherited neurodegenerative diseases caused by polyglutamine expansion in the ...

Vaccinia virus replicates in the cytoplasm of the host cell and encodes its own RNA polymerase and transcription factors. The proteins that target the poxvirus RNA polymerase to intermediate- and late-class promoters have not been identified. In this study, representatives of the intermediate and late promoters were characterized at the nucleotide level to identify essential motifs. Both interm...