IUB
Nucleotide Codes
Code
Definition
Mnemonic
A
Adenine
A
C
Cytosine
C
G
Guanine
G
T
Thymine
T
R
AG
pu
R
ine
Y
CT
p
Y
rimidine
K
GT
K
eto
M
AC
a
M
ino
S
GC
S
trong
W
AT
W
eak
B
CGT
Not A
D
AGT
Not C
H
ACT
Not G
V
ACG
Not T
N
AGCT
a
N
y