Table II.

Michaelis constants for substrates of recombinant N-methyltransferases

SubstrateKm
CaXMT1CaMXMT1CaMXMT2CaDXMT1
μm
Methyl group acceptor
XR78 ± 7
7mX148 ± 7251 ± 20916 ± 18
Px458 ± 36738 ± 51973 ± 88
Tb1,222 ± 197
Methyl group donor
AdoMet13 ± 212 ± 214 ± 1153 ± 31

The values are the averages of the three independent measurements shown in Figure 4. Each value was obtained using Anemona (Hernandez and Ruiz, 1998).