The SMotif algorithm is designed to allow to search for words in chromosomes, accepting ambiguities. The user must include a sequence in which ambiguous nucleotides, if present, are included within square brackets (e. g. AC[ACT]G). Ns, indicating any nucleotide, are also accepted. The program generates two files, one with the frequency of each word among those that are included in the regular expression used and a second one with the positions of each word in the analyzed DNA sequence.
This analysis can take a few seconds
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