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Table 1 Kinetic parameters of SrSpmHT with fixed concentrations of spermine and varying acyl donor substrates

From: A novel hydroxycinnamoyl transferase for synthesis of hydroxycinnamoyl spermine conjugates in plants

Acyl donor Vmax (nmol•s−1•mg− 1) Km (μM) kcat (s− 1) kcat/Km (s− 1 μM− 1)
caffeoyl-CoA 1146.1 ± 101.4a 478.4 ± 46.5a 71.5 ± 6.3a 0.150 ± 0.001b
feruloyl-CoA 223.0 ± 8.0b 106.1 ± 9.0b 13.9 ± 0.5b 0.132 ± 0.006c
ρ-coumaroyl-CoA 135.8 ± 3.4c 49.0 ± 1.2c 8.5 ± 0.21c 0.173 ± 0.001a
  1. Note: Different letters indicate significant difference on values (P < 0.05)