Distinct modes of TATA box utilization by the RNA polymerase III transcription machineries from budding yeast and higher plants

Gene ◽  
2006 ◽  
Vol 379 ◽  
pp. 12-25 ◽  
Author(s):  
Giorgio Dieci ◽  
Yasushi Yukawa ◽  
Mircko Alzapiedi ◽  
Elisa Guffanti ◽  
Roberto Ferrari ◽  
...  
Keyword(s):  
Rna Polymerase ◽  
Higher Plants ◽  
Budding Yeast ◽  
Rna Polymerase Iii ◽  
Tata Box ◽  
Polymerase Iii

scholarly journals Upstream basal promoter element important for exclusive RNA polymerase III transcription of the EBER 2 gene.

1993 ◽  
Vol 13 (5) ◽  
pp. 2655-2665 ◽  
Author(s):  
J G Howe ◽  
M D Shu
Keyword(s):  
Rna Polymerase ◽  
Consensus Sequence ◽  
Rna Polymerase Iii ◽  
Class Ii ◽  
Transcription Unit ◽  
Tata Box ◽  
Promoter Element ◽  
Class Iii ◽  
Polymerase Iii

The Epstein-Barr virus-encoded small RNA (EBER) genes are transcribed by RNA polymerase III, but their transcription unit appears to contain both class II and class III promoter elements. One of these promoter element, a TATA-like box which we call the EBER TATA box, or ETAB, is located in a position typical for a class II TATA box but contains G/C residues in the normal T/A motif and a conserved thymidine doublet. Experiments using chloramphenicol acetyltransferase constructs and mutations in the TATA box of the adenovirus major late promoter showed that the ETAB promoter element does not substitute for a class II TATA box. However, when the ETAB promoter element sequence was changed to a class II TATA box consensus sequence, the EBER 2 gene was transcribed in vitro by both RNA polymerases II and III. From these results, we conclude that the ETAB promoter element is important for the exclusive transcription of the EBER 2 gene by RNA polymerase III.

scholarly journals TATA-box DNA binding activity and subunit composition for RNA polymerase III transcription factor IIIB from Xenopus laevis.

1996 ◽  
Vol 16 (9) ◽  
pp. 4639-4647 ◽  
Author(s):  
S J McBryant ◽  
E Meier ◽  
A Leresche ◽  
S J Sharp ◽  
V J Wolf ◽  
...  
Keyword(s):  
Dna Binding ◽  
Rna Polymerase ◽  
Transcriptional Activity ◽  
Rna Polymerase Iii ◽  
Sodium Dodecyl ◽  
Binding Activity ◽  
Tata Box ◽  
Initiation Factor ◽  
Dna Binding Activity ◽  
Polymerase Iii

The RNA polymerase III transcription initiation factor TFIIIB contains the TATA-box-binding protein (TBP) and polymerase III-specific TBP-associated factors (TAFs). Previous studies have shown that DNA oligonucleotides containing the consensus TATA-box sequence inhibit polymerase III transcription, implying that the DNA binding domain of TBP is exposed in TFIIIB. We have investigated the TATA-box DNA binding activity of Xenopus TFIIIB, using transcription inhibition assays and a gel mobility shift assay. Gel shift competition assays with mutant and nonspecific DNAs demonstrate the specificity of the TFIIIB-TATA box DNA complex. The apparent dissociation constant for this protein-DNA interaction is approximately 0.4 nM, similar to the affinity of yeast TBP for the same sequence. TFIIIB transcriptional activity and TATA-box binding activity cofractionate during a series of four ion-exchange chromatographic steps, and reconstituted transcription reactions demonstrate that the TATA-box DNA-protein complex contains TFIIIB TAF activity. Polypeptides with apparent molecular masses of 75 and 92 kDa are associated with TBP in this complex. These polypeptides were renatured after elution from sodium dodecyl sulfate-gels and tested individually and in combination for TFIIIB TAF activity. Recombinant TBP along with protein fractions containing the 75- and 92-kDa polypeptides were sufficient to reconstitute TFIIIB transcriptional activity and DNA binding activity, suggesting that Xenopus TFIIIB is composed of TBP along with these polypeptides.

scholarly journals A Novel Upstream RNA Polymerase III Promoter Element Becomes Essential When the Chromatin Structure of the Yeast U6 RNA Gene Is Altered

2001 ◽  
Vol 21 (19) ◽  
pp. 6429-6439 ◽  
Author(s):  
Michael P. Martin ◽  
Valerie L. Gerlach ◽  
David A. Brow
Keyword(s):  
Rna Polymerase ◽  
Rna Polymerase Iii ◽  
Point Mutations ◽  
Tata Box ◽  
Initiation Factor ◽  
Base Pairs ◽  
Polymerase Iii ◽  
U6 Rna

ABSTRACT The Saccharomyces cerevisiae U6 RNA gene,SNR6, possesses upstream sequences that allow productive binding in vitro of the RNA polymerase III (Pol III) transcription initiation factor IIIB (TFIIIB) in the absence of TFIIIC or other assembly factors. TFIIIC-independent transcription ofSNR6 in vitro is highly sensitive to point mutations in a consensus TATA box at position −30. In contrast, the TATA box is dispensable for SNR6 transcription in vivo, apparently because TFIIIC bound to the intragenic A block and downstream B block can recruit TFIIIB via protein-protein interactions. A mutant allele ofSNR6 with decreased spacing between the A and B blocks,snr6-Δ42, exhibits increased dependence on the upstream sequences in vivo. Unexpectedly, we find that in vivo expression of snr6-Δ42 is much more sensitive to mutations in a (dT-dA)7 tract between the TATA box and transcription start site than to mutations in the TATA box itself. Inversion of single base pairs in the center of the dT-dA tract nearly abolishes transcription of snr6-Δ42, yet inversion of all 7 base pairs has little effect on expression, indicating that the dA-dT tract is relatively orientation independent. Although it is within the TFIIIB footprint, point mutations in the dT-dA tract do not inhibit TFIIIB binding or TFIIIC-independent transcription ofSNR6 in vitro. In the absence of the chromatin architectural protein Nhp6, dT-dA tract mutations are lethal even when A-to-B block spacing is wild type. We conclude that the (dT-dA)7 tract and Nhp6 cooperate to direct productive transcription complex assembly on SNR6 in vivo.

scholarly journals Differential Utilization of TATA Box-binding Protein (TBP) and TBP-related Factor 1 (TRF1) at Different Classes of RNA Polymerase III Promoters

2013 ◽  
Vol 288 (38) ◽  
pp. 27564-27570 ◽  
Author(s):  
Neha Verma ◽  
Ko-Hsuan Hung ◽  
Jin Joo Kang ◽  
Nermeen H. Barakat ◽  
William E. Stumph
Keyword(s):  
Rna Polymerase ◽  
Binding Protein ◽  
Rna Polymerase Iii ◽  
Tata Box ◽  
Related Factor ◽  
U6 Snrna ◽  
Polymerase Iii ◽  
Tata Box Binding Protein ◽  
In Cells

In the fruit fly Drosophila melanogaster, RNA polymerase III transcription was found to be dependent not upon the canonical TATA box-binding protein (TBP) but instead upon the TBP-related factor 1 (TRF1) (Takada, S., Lis, J. T., Zhou, S., and Tjian, R. (2000) Cell 101, 459–469). Here we confirm that transcription of fly tRNA genes requires TRF1. However, we unexpectedly find that U6 snRNA gene promoters are occupied primarily by TBP in cells and that knockdown of TBP, but not TRF1, inhibits U6 transcription in cells. Moreover, U6 transcription in vitro effectively utilizes TBP, whereas TBP cannot substitute for TRF1 to promote tRNA transcription in vitro. Thus, in fruit flies, different classes of RNA polymerase III promoters differentially utilize TBP and TRF1 for the initiation of transcription.

scholarly journals Decoding the principles underlying the frequency of association with nucleoli for RNA polymerase III–transcribed genes in budding yeast

2016 ◽  
Vol 27 (20) ◽  
pp. 3164-3177 ◽  
Author(s):  
Praveen Belagal ◽  
Christophe Normand ◽  
Ashutosh Shukla ◽  
Renjie Wang ◽  
Isabelle Léger-Silvestre ◽  
...  
Keyword(s):  
Rna Polymerase ◽  
Spatial Organization ◽  
Budding Yeast ◽  
Rna Polymerase Iii ◽  
Nuclear Periphery ◽  
Spindle Pole ◽  
Dna Arrays ◽  
Chromosome Architecture ◽  
Polymerase Iii ◽  
Pol Iii

The association of RNA polymerase III (Pol III)–transcribed genes with nucleoli seems to be an evolutionarily conserved property of the spatial organization of eukaryotic genomes. However, recent studies of global chromosome architecture in budding yeast have challenged this view. We used live-cell imaging to determine the intranuclear positions of 13 Pol III–transcribed genes. The frequency of association with nucleolus and nuclear periphery depends on linear genomic distance from the tethering elements—centromeres or telomeres. Releasing the hold of the tethering elements by inactivating centromere attachment to the spindle pole body or changing the position of ribosomal DNA arrays resulted in the association of Pol III–transcribed genes with nucleoli. Conversely, ectopic insertion of a Pol III–transcribed gene in the vicinity of a centromere prevented its association with nucleolus. Pol III–dependent transcription was independent of the intranuclear position of the gene, but the nucleolar recruitment of Pol III–transcribed genes required active transcription. We conclude that the association of Pol III–transcribed genes with the nucleolus, when permitted by global chromosome architecture, provides nucleolar and/or nuclear peripheral anchoring points contributing locally to intranuclear chromosome organization.

scholarly journals Point mutations 5' to the tRNA selenocysteine TATA box alter RNA polymerase III transcription by affecting the binding of TBP

1993 ◽  
Vol 21 (25) ◽  
pp. 5852-5858 ◽  
Author(s):  
Evelyne Myslinski ◽  
Catherine Schuster ◽  
Janine Huet ◽  
Andre Sentenac ◽  
Alain Krol ◽  
...  
Keyword(s):  
Rna Polymerase ◽  
Rna Polymerase Iii ◽  
Point Mutations ◽  
Tata Box ◽  
Polymerase Iii
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