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. Author manuscript; available in PMC: 2008 Nov 10.
Published in final edited form as: Int J Cancer. 2006 Sep 1;119(5):1208–1211. doi: 10.1002/ijc.21957

Table 1.

Effects of NAT2 SNPs

SNP Amino Acid Change N-acetyltransferase Activity O-acetyltransferase Activity mRNA Level Protein Level Thermostability
Sulfamethazine 2-Aminofluorene N-OH-MeIQx N-OH-PhIP
T111C None +++ +++ +++ +++ +++ +++ +++
C282T None +++ +++ +++ +++ +++ +++ +++
C481T None +++ +++ +++ +++ +++ +++ +++
C759T None +++ +++ +++ +++ +++ +++ +++
A803G
K268R
+++
+++
+++
+++
+++
+++
+++
C190T R64W + + + + +++ + +
G191A
R64Q
+
+
+
++
+++
++
+
T341C I114T + + + + +++ + +++
A434C
E145P
+
+
+
+
+++
+
+++
G590A
R197Q
++
++
++
++
+++
+
+
A845C K282T +++ ++ ++ ++ +++ +++ +
G857A G286E +++ ++ ++ +++ +++ +++ +

Relative to NAT2*4. +, 0−35%; ++, 36−70%; +++, >70%

N-acetyltransferase activity, protein level and thermostability data derived from Fretland et al., 11; Zhu et al., 12.