title: How to I check if a sequence is a protein sequence or not?
body: <p>Given a random sequence, how can I check if that sequence is protein or not? </p>
  
  <pre><code>from Bio.Seq import Seq
  from Bio.Alphabet import IUPAC
  my_prot = Seq("'TGEKPYVCQECGKAFNCSSYLSKHQR")
  my_prot
  
  
  my_prot.alphabet #How to make a check here ??
  </code></pre>