RNA splicing specificity determined by the coordinated action of RNA recognition motifs in SR proteins

Chandler, S. D., Mayeda, A., Yeakley, J. M., Krainer, A. R., Fu, X. D. (April 1997) RNA splicing specificity determined by the coordinated action of RNA recognition motifs in SR proteins. Proceedings of the National Academy of Sciences of the United States of America, 94 (8). pp. 3596-3601. ISSN 0027-8424

URL: http://www.ncbi.nlm.nih.gov/pubmed/9108022
DOI: 10.1073/pnas.94.8.3596

Abstract

Pre-mRNA splicing requires a large number of RNA-binding proteins that have one or more RNA-recognition motifs (RRMs). Among these is the SR protein family, whose members are essential for splicing and are able to commit pre-mRNAs to the splicing pathway with overlapping but distinct substrate specificity. Some SR proteins, such as SC35, contain an N-terminal RRM and a C-terminal arginine/serine-rich (RS) domain, whereas others, such as SF2/ASF, also contain a second, atypical RRM. Although both the RRMs and the RS domain of SR proteins are required for constitutive splicing, it is unclear which domain(s) defines their substrate specificity, and whether two RRMs in a given SR protein function independently or act coordinately. Using domain swaps between SC35 and SF2/ASF and a functional commitment assay, we demonstrate that individual domains are functional modules, RS domains are interchangeable, and substrate specificity is defined by the RRMs. The atypical RRM of SF2/ASF does not appear to function alone in splicing, hut can either activate or suppress the splicing specificity of an N-terminal RRM. Therefore, multiple RRMs in SR proteins act coordinately to achieve a unique spectrum of pre-mRNA substrate specificity.

Item Type: Paper
Uncontrolled Keywords: pre-messenger-rna nuclear ribonucleoprotein particle immunodeficiency-virus type-1 5'-splice-site recognition premessenger rna site selection domains u1 elements binding
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 > pre-mRNA
bioinformatics > genomics and proteomics > genetics & nucleic acid processing > DNA, RNA structure, function, modification > RNA splicing
CSHL Authors:
Communities: CSHL labs > Krainer lab
Depositing User: Matt Covey
Date: April 1997
Date Deposited: 11 Dec 2013 16:32
Last Modified: 11 Dec 2013 16:32
PMCID: PMC20485
Related URLs:
URI: http://repository.cshl.edu/id/eprint/28942

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