A map of protein-protein contacts within the small nuclear RNA-activating protein complex SNAPc

Ma, B., Hernandez, N. (February 2001) A map of protein-protein contacts within the small nuclear RNA-activating protein complex SNAPc. Journal of Biological Chemistry, 276 (7). pp. 5027-5035. ISSN 0021-9258

URL: http://www.ncbi.nlm.nih.gov/pubmed/11056176
DOI: 10.1074/jbc.M009301200

Abstract

The nucleation of RNA polymerases I-III transcription complexes is usually directed by distinct multisubunit factors. In the case of the human RNA polymerase II and III small nuclear RNA (snRNA) genes, whose core promoters consist of a proximal sequence element (PSE) and a PSE combined with a TATA box, respectively, the same multisubunit complex is involved in the establishment of RNA polymerase II and III initiation complexes. This factor, the snRNA-activating protein complex or SNAP(c), binds to the PSE of both types of promoters and contains five types of subunits, SNAP190, SNAP50, SNAP45, SNAP43, and SNAP19, SNAP(c) binds cooperatively with both Oct-1, an activator of snRNA promoters, and in the RNA polymerase III snRNA promoters, with TATA-binding protein, which binds to the TATA box located downstream of the PSE. Here we have defined subunit domains required for SNAP, subunit-subunit association, and we show that complexes containing little more than the domains mapped here as required for subunit-subunit contacts bind specifically to the PSE, These data provide a detailed map of the subunit-subunit interactions within a multifunctional basal transcription complex.

Item Type: Paper
Uncontrolled Keywords: PROXIMAL SEQUENCE ELEMENT HUMAN SNRNA GENES OCT-1 POU DOMAIN POLYMERASE-III TRANSCRIPTION FACTOR SUBUNIT TBP EXPRESSION PROMOTERS CLONING
Subjects: bioinformatics > genomics and proteomics > genetics & nucleic acid processing > DNA, RNA structure, function, modification
bioinformatics > genomics and proteomics > genetics & nucleic acid processing > DNA, RNA structure, function, modification > transcription
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 2001
Date Deposited: 17 Jan 2014 21:42
Last Modified: 17 Jan 2014 21:42
Related URLs:
URI: http://repository.cshl.edu/id/eprint/29268

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