[Solved] How to write regular expression for given sequence

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These are the steps I would take:

1) align the sequences
2) read each column of the alignment and produce a list of the different possible amino acids in each position
3) each position can now be represented by a list which is easily converted to a regular expression

For 1st three positions it would be:

(Q|V|F|Y)(I|V|G|Q|L)(T|A|D|L|S|F|E|Q)

Oh, and for crying out loud, if you want to be a biostats grad student, learn some biology!

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solved How to write regular expression for given sequence