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자연과학대학
생명과학전공
Journal papers
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ECgene: Genome-based EST clustering and gene modeling for alternative splicing
Title
ECgene: Genome-based EST clustering and gene modeling for alternative splicing
Authors
Kim N.
;
Shin S.
;
Lee S.
Ewha Authors
이상혁
SCOPUS Author ID
이상혁
Issue Date
2005
Journal Title
Genome Research
ISSN
1088-9051
Citation
Genome Research vol. 15, no. 4, pp. 566 - 576
Indexed
SCI; SCIE; SCOPUS
Document Type
Article
Abstract
With the availability of the human genome map and fast algorithms for sequence alignment, genome-based EST clustering became a viable method for gene modeling. We developed a novel gene-modeling method, ECgene (Gene modeling by EST Clustering), which combines genome-based EST clustering and the transcript assembly procedure in a coherent and consistent fashion. Specifically, ECgene takes alternative splicing events into consideration. The position of splice sites (i.e., exon-intron boundaries) in the genome map is utilized as the critical information in the whole procedure. Sequences that share any splice sites are grouped together to define an EST cluster in a manner similar to that of the genome-based version of the UniGene algorithm. Transcript assembly is achieved using graph theory that represents the exon connectivity in each cluster as a directed acyclic graph (DAG). Distinct paths along exons correspond to possible gene models encompassing all alternative splicing events. EST sequences in each cluster are subclustered further according to the compatibility with gene structure of each splice variant, and they can be regarded as clone evidence for the corresponding isoform. The reliability of each isoform is assessed from the nature of cluster members and from the minimum number of clones required to reconstruct all exons in the transcript. ©2005 by Cold Spring Harbor Laboratory Press.
DOI
10.1101/gr.3030405
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