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Re^2: Perl regular expression for amino acid sequence

by dragonchild (Archbishop)
on Dec 01, 2004 at 20:47 UTC ( [id://411561]=note: print w/replies, xml ) Need Help??


in reply to Re: Perl regular expression for amino acid sequence
in thread Perl regular expression for amino acid sequence

Build that programmatically.
my $regex = '(([QGYN])'; $regex .= '((?!\\' . $_ . ')[QGYN]|\\' . $_. '(?!\\${_}))' for 2 .. 3; $regex .= '(?:((?!\\' . $_ . ')[QGYN]|\\' . $_ . '(?!\\' . $_ . '))' f +or 4 .. 5; $regex .= '[QGYN]?)?)?)'; $regex = qr/$regex/; while ($seq{$k} =~ /$regex/g) { print "\n$k"; print $1." begins at position ", (pos($seq{$k})-length($s)) , "\n" +; }

Now, I have no idea what all that does, but it's easily broken apart. :-)

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