xample
      modified nucleotides (e.g., methylcytosines) or modified amino acids
      (e.g., phosphorylated serines and tyrosines).</p> 
      <p>This document describes how you can specify an alphabet of your 
      own design for use with the MEME Suite programs that support custom alphabets.
      When you specify a custom alphabet, you can define the symbols
      that represent each nucleotide or amino acid, their names, their colors
      and their complements (in the case of alphabets like DNA that