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  4. The telomere-binding protein Tbf1 demarcates snoRNA gene promoters in Saccharomyces cerevisiae
 
research article

The telomere-binding protein Tbf1 demarcates snoRNA gene promoters in Saccharomyces cerevisiae

Preti, Milena
•
Ribeyre, Cyril
•
Pascali, Chiara
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2010
Molecular cell

Small nucleolar RNAs (snoRNAs) play a key role in ribosomal RNA biogenesis, yet factors controlling their expression are unknown. We found that the majority of Saccharomyces snoRNA promoters display an aRCCCTaa sequence motif at the upstream border of a TATA-containing nucleosome-free region. Genome-wide ChIP-seq analysis showed that these motifs are bound by Tbf1, a telomere-binding protein known to recognize mammalian-like T(2)AG(3) repeats at subtelomeric regions. Tbf1 has over 100 additional promoter targets, including several other genes involved in ribosome biogenesis and the TBF1 gene itself. Tbf1 is required for full snoRNA expression, yet it does not influence nucleosome positioning at snoRNA promoters. In contrast, Tbf1 contributes to nucleosome exclusion at non-snoRNA promoters, where it selectively colocalizes with the Tbf1-interacting zinc-finger proteins Vid22 and Ygr071c. Our data show that, besides the ribosomal protein gene regulator Rap1, a second telomere-binding protein also functions as a transcriptional regulator linked to yeast ribosome biogenesis.

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Type
research article
DOI
10.1016/j.molcel.2010.04.016
Web of Science ID

WOS:000278448100015

Author(s)
Preti, Milena
Ribeyre, Cyril
Pascali, Chiara
Bosio, Maria Cristina
Cortelazzi, Barbara
Rougemont, Jacques
Guarnera, Enrico
Naef, Felix  
Shore, David
Dieci, Giorgio
Date Issued

2010

Publisher

Elsevier

Published in
Molecular cell
Volume

38

Issue

4

Start page

614

End page

20

Subjects

Small Nucleolar Rnas

•

Nucleosome Organization

•

Regulatory Elements

•

Eukaryotic Genome

•

Polymerase-Iii

•

Ribosomal-Rna

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Yeast

•

Transcription

•

Dna

•

Identification

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
UPNAE  
Available on Infoscience
November 1, 2010
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/56550
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