Title |
A context-based approach to identify the most likely mapping for RNA-seq experiments
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Published in |
BMC Bioinformatics, April 2012
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DOI | 10.1186/1471-2105-13-s6-s9 |
Pubmed ID | |
Authors |
Thomas Bonfert, Gergely Csaba, Ralf Zimmer, Caroline C Friedel |
Abstract |
Sequencing of mRNA (RNA-seq) by next generation sequencing technologies is widely used for analyzing the transcriptomic state of a cell. Here, one of the main challenges is the mapping of a sequenced read to its transcriptomic origin. As a simple alignment to the genome will fail to identify reads crossing splice junctions and a transcriptome alignment will miss novel splice sites, several approaches have been developed for this purpose. Most of these approaches have two drawbacks. First, each read is assigned to a location independent on whether the corresponding gene is expressed or not, i.e. information from other reads is not taken into account. Second, in case of multiple possible mappings, the mapping with the fewest mismatches is usually chosen which may lead to wrong assignments due to sequencing errors. |
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