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. Author manuscript; available in PMC: 2008 Aug 15.
Published in final edited form as: Arch Biochem Biophys. 2007 May 2;464(2):251–259. doi: 10.1016/j.abb.2007.04.014

Table 4.

Km values (μM) for trimethylamine, benzydamine and methyl p-tolyl sulfide metabolism by FMO3 allelic variants.

FMO3
Variant
Trimethylamine Benzydamine Methyl p-tolyl
Sulfide
Wild Type 31 ± 3 43 ± 4 248 ± 28
E158K 27 ± 3 33 ± 2 181 ± 23
V257M 27 ± 8 121 ± 24 207 ± 5
E308G 29 ± 2 39 ± 5 219 ± 39
158K/308G 22 ± 1 47 ± 5 301 ± 42

N61S 205 ± 31 335 ± 31 264 ± 16
P153L 30 ± 6 73 ± 10 242 ± 36

M66I NA NA NA
R492W NA NA NA

NA: No activity detected