Journal
GENE
Volume 366, Issue 2, Pages 219-227Publisher
ELSEVIER
DOI: 10.1016/j.gene.2005.07.015
Keywords
alternative splicing; splice site prediction; GC content; oligonucleotide-frequency models; neural networks; ASSP
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Human alternative isoform, cryptic, skipped, and constitutive splice sites from the ALTEXTRON database were analysed regarding splice site strength, composition, GC content, position and binding site strength of polypyrimidine tract and branch site. Several features were identified which distinguish alternative isoform and cryptic splice sites, but not skipped splice sites front constitutive ones. These include splice site strength, introns GC content, U2AF(35) binding site score, and oligonucleotide frequencies. For the predictive classification of splice sites, pattern recognition models for different splicing factor binding sites and oligonucleotide frequency models (OFMs) were combined using backpropagation networks. 67.45% of acceptor sites and 71.23% of donor sites are correctly classified by networks trained for classification of constitutive and alternative isoform/cryptic splice sites. A web-application for the prediction of alternative splice sites is available at http://es.embnet.org/similar to mwang/assp.html. (c) 2005 Elsevier B.V. All rights reserved.
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