 = ACG
N = ACGT # wildcard symbol
X = ACGT # wildcard symbol
</textarea>
    </div>

    <h4 id="standard_RNA">3) Standard RNA Alphabet</h4>
    <div class="indent">

<textarea rows="21" cols="100" readonly>
ALPHABET "RNA" RNA-LIKE

# This alphabet will accept "T" in place of "U"
# in input sequences, but logos will use "U".

# Core symbols
A "Adenine" CC0000 
C "Cytosine" 0000CC 
U "Uracil" 008000
G "Guanine" FFB300

# Ambiguous symbols
T = U   # (permit T in input sequences)
R = AG
Y = CU
K = GU
M = AC
S 