MAST IUPAC Ambiguous Characters

optional
letter		 matches
DNA protein
B CGT DN
D AGT
H ACT
K GT
M AC
N ACGT
R AG
S CG
U T ACDEFGHIKLMNPQRSTVWY
V CAG
W AT
X ACDEFGHIKLMNPQRSTVWY
Y CT
Z EQ
* ACGT ACDEFGHIKLMNPQRSTVWY
- ACGT ACDEFGHIKLMNPQRSTVWY