IUPAC Ambiguity Codes
IUPAC Code
Meaning
Complement
A
A
T
C
C
G
G
G
C
T/U
T
A
M
A or C
K
R
A or G
Y
W
A or T
W
S
C or G
S
Y
C or T
R
K
G or T
M
V
A or C or G
B
H
A or C or T
D
D
A or G or T
H
B
C or G or T
V
N
G or A or T or C
N