Using RepeatMasker to Identify Repetitive Elements in Genomic Sequences
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Abstract
RepeatMasker is a popular software tool widely used in computational genomics to identify, classify, and mask repetitive elements, including low-complexity sequences and interspersed repeats. RepeatMasker searches for repetitive sequence by aligning the input genome sequence against a library of known repeats, such as Repbase. Here, we describe two Basic Protocols that provide detailed guidelines on how to use RepeatMasker, either via the Web interface or command-line Unix/Linux system, to analyze repetitive elements in genomic sequences. Sequence comparisons in RepeatMasker are usually performed by the alignment program cross_match, which requires significant processing time for larger sequences. An Alternate Protocol describes how to reduce the processing time using an alternative alignment program, such as WU-BLAST. Further, the advantages, limitations, and known bugs of the software are discussed. Finally, guidelines for understanding the results are provided.
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The record
- Venue
- Current Protocols in Bioinformatics
- Topic
- Genomics and Phylogenetic Studies
- Field
- Biochemistry, Genetics and Molecular Biology
- Canadian institutions
- Simon Fraser University
- Funders
- —
- Keywords
- UnixComputer scienceSequence (biology)SoftwareSequence alignmentGenomicsComputational biologyGenomeProgramming languageBiologyGenetics
- Has abstract in OpenAlex
- yes