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The multiassembly problem: Reconstructing multiple transcript isoforms from EST fragment mixtures

delete2004-02-12
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邢
邢奕 (Yi Xing)
A
Alissa Resch
C
Christopher Seungkyu Lee
DOI:10.1101/gr.1304504delete
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摘要

摘要

En 中文
Recent evidence of abundant transcript variation (e.g., alternative splicing, alternative initiation, alternative polyadenylation) in complex genomes indicates that cataloging the complete set of transcripts from ail organism is ail important project. One challenge is the fact that most high-throughput experimental methods for characterizing transcripts (Such as EST sequencing) give highly detailed information about short fragments of transcripts or protein products, instead of a complete characterization of a full-length form. We analyze this multiassembly problem-reconstructing the most likely set Of full-length isoform sequences from a mixture of EST fragment data-and present a graph-based algorithm for solving it. In a variety of tests, we demonstrate that this algorithm deals appropriately with coupling,a of distinct alternative splicing events, increasing fragmentation of the input data and different types of transcript variation (such as alternative splicing, initiation, polyadenylation, and intron retention). To test the method's performance oil pure fragment (EST) data, we removed all mRNA sequences, and found it produced no errors in 40 cases tested. Using this algorithim, we have constructed ail Alternatively Spliced Proteins database (ASP) from analysis Of human expressed and genomic sequences, consisting of 13,384 protein isoforms of 4422 genes, yielding an average of 3.0 protein isoforms per gene.
Keyword:
GLUCOCORTICOID MODULATORY ELEMENT
ALPHA MESSENGER-RNA
TIGR GENE INDEXES
FORK-HEAD FACTOR
RECEPTOR-ALPHA
MOLECULAR-CLONING
FACTOR-BINDING
PAIRED DOMAIN
EXPRESSION
PROTEIN
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Genome Research 封面图
Genome Research
IF:
5.5
论文数:
5.6K
被引数:
4.3W

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