First of all, sorry for my poor english.
I work with DNA sequence and want to extract relevant motives of course
using regular expression.
A concrete example will be better than a long description of my problem, so
:
Here is a string corresponding to my DNA strand :
cgttgctagctgctatcgatgtgctagtcgatgctagtgcatgcgtagtgcagtcatatgctaggcat
I want to extract all the substrings beginning with tag and finishing with
tag including substrings with same start point but different length like :
tagctgctatcgatgtgctag
tagctgctatcgatgtgctagtcgatgctag
tagctgctatcgatgtgctagtcgatgctagtgcatgcgtag
How to write a regular expression which will not increase the value pos()
after finding one match but keep the same value of pos() and extract all
sequences with different lengths ?
To sum up, if I have this sequence :
taggcgttatcgctagcgcatcgataggctactattcgtagcc
My regular expression must extract :
taggcgttatcgctag
taggcgttatcgctagcgcatcgatag
taggcgttatcgctagcgcatcgataggctactattcgtag
tagcgcatcgatag
tagcgcatcgataggctactattcgtag
taggctactattcgtag
Thanks for any help ...
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