Newport iServer MicroServer iTHX-M Operator's Manual page 395

IUPAC Base Codes
Table F.1
IUPAC Base Codes
IUPAC Code Group
A A
C C
G G
T T
M A or C
R A or G
W A or T (U)
Y C or T (U)
S C or G
K G or T(U)
V A or C or G
H A or C or T(U)
D A or G or T(U)
B C or G or T(U)
N A, C, G or T(U)
387
Base(s)
Adenine
Cytosine
Guanine
Thymine
aMino
puRine
Weak interaction (2 H
bonds)
pYrimidine
Strong interaction (3
H bonds)
Keto
not-T or not-U (since
V follows U)
not-G (since H follows
G)
not-C (since D follows
C)
not-A (since B follows
A)
aNy