Journal
NUCLEIC ACIDS RESEARCH
Volume 39, Issue 4, Pages -Publisher
OXFORD UNIV PRESS
DOI: 10.1093/nar/gkq1212
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Biological sequences are often analyzed by detecting homologous regions between them. Homology search is confounded by simple repeats, which give rise to strong similarities that are not homologies. Standard repeat-masking methods fail to eliminate this problem, and they are especially ill-suited to AT-rich DNA such as malaria and slime-mould genomes. We present a new repeat-masking method, tantan, which is motivated by the mechanisms that create simple repeats. This method thoroughly eliminates spurious homology predictions for DNA-DNA, protein-protein and DNA-protein comparisons. Moreover, it enables accurate homology search for non-coding DNA with extreme A + T composition.
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