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Nucleotide code

IUPAC ambiguous nucleotide code

A A Adenine
C C Cytosine
G G Guanine
T T Thymine
R A or G puRine
Y C or T pYrimidine
W A or T Weak hydrogen bonding
S C or G Strong hydrogen bonding
M A or C aMino group at common position
K G or T Keto group at common position
B C, G or T not A
D A, G or T not C
H A, C or T not G
V A, C or G not T
N A, C, G or T aNy