RepeatMasker is a program that screens DNA sequences for interspersed repeats and low complexity DNA sequences. The output of the program is a detailed annotation of the repeats that are present in the query sequence as well as a modified version of the query sequence in which all the annotated repeats have been masked (default: replaced by Ns). On average, almost 50% of a human genomic DNA sequence currently will be masked by the program. Sequence comparisons in RepeatMasker are performed by one of several popular search engines including, cross_match, ABBlast/WUBlast, RMBlast and Decypher.
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Genome Res. 2008 Aug;18(8):1362-8. Epub 2008 May 23.
DupMasker: a tool for annotating primate segmental duplications.
Jiang Z, Hubley R, Smit A, Eichler EE.