Note also you have the following: 

   while(my $protein =  ...
      if(my $protien =~ ...
                 ^^

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The 'if' will never match because you have declared a new variable. In the 'if', correct the spelling and drop 'my': 

   if ($protein =~ ...

[download]

In reply to Re: Regex help by hbm
in thread Regex help by randomhero1270

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