May 20, 2009

Fast and accurate short read alignment with Burrows-Wheeler transform

Bioinformatics
Heng Li, Richard Durbin

Abstract

The enormous amount of short reads generated by the new DNA sequencing technologies call for the development of fast and accurate read alignment programs. A first generation of hash table-based methods has been developed, including MAQ, which is accurate, feature rich and fast enough to align short reads from a single individual. However, MAQ does not support gapped alignment for single-end reads, which makes it unsuitable for alignment of longer reads where indels may occur frequently. The speed of MAQ is also a concern when the alignment is scaled up to the resequencing of hundreds of individuals. We implemented Burrows-Wheeler Alignment tool (BWA), a new read alignment package that is based on backward search with Burrows-Wheeler Transform (BWT), to efficiently align short sequencing reads against a large reference sequence such as the human genome, allowing mismatches and gaps. BWA supports both base space reads, e.g. from Illumina sequencing machines, and color space reads from AB SOLiD machines. Evaluations on both simulated and real data suggest that BWA is approximately 10-20x faster than MAQ, while achieving similar accuracy. In addition, BWA outputs alignment in the new standard SAM (Sequence Alignment/Map) format. Va...Continue Reading

  • References13
  • Citations10262

References

Mentioned in this Paper

Computer Programs and Programming
DNA Resequencing
Genomics
Sequencing
Sequence Determinations, DNA
Genome, Human
Determination, Sequence Homology
Sequence Alignment
DNA Sequence

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