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Nucleic Acids Res. 2004 Feb 18;32(3):e35.

Unlocking hidden genomic sequence.

Author information

1
Department of Mathematics, University of Queensland, St Lucia, Queensland 4072, Australia. j.keith1@mailbox.uq.edu.au

Abstract

Despite the success of conventional Sanger sequencing, significant regions of many genomes still present major obstacles to sequencing. Here we propose a novel approach with the potential to alleviate a wide range of sequencing difficulties. The technique involves extracting target DNA sequence from variants generated by introduction of random mutations. The introduction of mutations does not destroy original sequence information, but distributes it amongst multiple variants. Some of these variants lack problematic features of the target and are more amenable to conventional sequencing. The technique has been successfully demonstrated with mutation levels up to an average 18% base substitution and has been used to read previously intractable poly(A), AT-rich and GC-rich motifs.

PMID:
14973330
PMCID:
PMC373418
DOI:
10.1093/nar/gnh022
[Indexed for MEDLINE]
Free PMC Article
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