An exonic splicing enhancer in human IGF-I pre-mRNA mediates recognition of alternative exon 5 by the serine-arginine protein splicing factor-2/alternative splicing factor

Smith, P. J., Spurrell, E. L., Coakley, J., Hinds, C. J., Ross, R. J. M., Krainer, A. R., Chew, S. L. (January 2002) An exonic splicing enhancer in human IGF-I pre-mRNA mediates recognition of alternative exon 5 by the serine-arginine protein splicing factor-2/alternative splicing factor. Endocrinology, 143 (1). pp. 146-154. ISSN 0013-7227

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URL: http://www.ncbi.nlm.nih.gov/pubmed/11751603
DOI: 10.1210/en.143.1.146

Abstract

The human IGF-I gene has six exons, four of which are alternatively spliced. Variations in splicing involving exon 5 may occur, depending on the tissue type and hormonal environment. To study the regulation of splicing to IGF-I exon 5, we established an in vitro splicing assay, using a model pre-mRNA containing IGF-I exons 4 and 5 and part of the intervening intron. Using a series of deletion mutants, we identified an 18-nucleotide purine-rich splicing enhancer in exon 5 that increases the splicing efficiency of the upstream intron from 6 to 35%. We show that the serine-arginine protein splicing factor-2/alternative splicing factor specifically promotes splicing in cultured cells and in vitro and is recruited to the spliceosome in an enhancer-specific manner. Our findings are consistent with a role for splicing factor-2/alternative splicing factor in the regulation of splicing of IGF-I alternative exon 5 via a purine-rich exonic splicing enhancer.

Item Type: Paper
Subjects: bioinformatics > genomics and proteomics > genetics & nucleic acid processing > DNA, RNA structure, function, modification
bioinformatics > genomics and proteomics > genetics & nucleic acid processing
bioinformatics > genomics and proteomics
bioinformatics > genomics and proteomics > genetics & nucleic acid processing > protein structure, function, modification
bioinformatics > genomics and proteomics > genetics & nucleic acid processing > DNA, RNA structure, function, modification > exons > exon splicing
bioinformatics > genomics and proteomics > genetics & nucleic acid processing > DNA, RNA structure, function, modification > pre-mRNA
bioinformatics > genomics and proteomics > genetics & nucleic acid processing > protein structure, function, modification > protein types
bioinformatics > genomics and proteomics > genetics & nucleic acid processing > protein structure, function, modification > protein types > splicing factor
CSHL Authors:
Communities: CSHL labs > Krainer lab
Depositing User: Matt Covey
Date: January 2002
Date Deposited: 31 Oct 2013 18:49
Last Modified: 31 Oct 2013 18:49
Related URLs:
URI: http://repository.cshl.edu/id/eprint/28789

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