Targeting TBP to a non-TATA box cis-regulatory element: a TBP-containing complex activates transcription from snRNA promoters through the PSE

Sadowski, C. L., Henry, R. W., Lobo, S. M., Hernandez, N. (February 1994) Targeting TBP to a non-TATA box cis-regulatory element: a TBP-containing complex activates transcription from snRNA promoters through the PSE. Genes & Development, 7 (8). pp. 1535-1548. ISSN 0890-9369

URL: http://www.ncbi.nlm.nih.gov/pubmed/8339931
DOI: 10.1101/gad.7.8.1535

Abstract

In the human small nuclear RNA (snRNA) promoters, the presence of a TATA box recognized by the TATA box-binding protein (TBP) determines the selection of RNA polymerase III over RNA polymerase II. The RNA polymerase II snRNA promoters are, therefore, good candidates for TBP-independent promoters. We show here, however, that TBP activates transcription from RNA polymerase II snRNA promoters through a non-TATA box element, the snRNA proximal sequence element (PSE), as part of a new snRNA-activating protein complex (SNAPc). In contrast to the previously identified TBP-containing complexes SL1, TFIID, and TFIIIB, which appear dedicated to transcription by a single RNA polymerase, SNAPc is also essential for RNA polymerase III transcription from the U6 snRNA promoter. The U6 initiation complex appears to contain two forms of TBP, one bound to the TATA box and one bound to the PSE as a part of SNAPc, suggesting that multiple TBP molecules can have different functions within a single promoter.

Item Type: Paper
Subjects: bioinformatics > genomics and proteomics > genetics & nucleic acid processing > DNA, RNA structure, function, modification > cis-regulatory elements
bioinformatics > genomics and proteomics > genetics & nucleic acid processing > DNA, RNA structure, function, modification > snRNA
CSHL Authors:
Communities: CSHL labs > Hernandez lab
Depositing User: Matt Covey
Date: February 1994
Date Deposited: 04 May 2015 19:33
Last Modified: 04 May 2015 19:33
Related URLs:
URI: http://repository.cshl.edu/id/eprint/31484

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