ue to the overlap in
                    IUPAC alphabets.  In such cases, LANL seems to assume
                    nucleotides, potentially producing incorrect results.  For
                    example, the amino acid sequence <code>MGGDMKDNW</code> is
                    also a valid nucleotide sequence, albeit one many ambiguous
                    bases.  Interpreting it as nucleotides, however, is
                    incorrect.  It is not uncommon for short amino acid
                    peptides to exh