Spectral libraries for contaminants!

Matrix Science has a really great and super professional blog. They don't produce as much content as this one does, but the content is significantly better.  You can check it out here.

Last month's post has a really great idea and a walkthrough on how to set it up.  Instead of searching all our data with a contaminants FASTA, what if we had a spectral library of those nasty things. John will describe better why this is a good idea and when it is an awesome idea in his post than I will.

Now...how to set this up if no one will let you use their Mascot server....