Fig. 2.

V/K values for ERK2 for TyrH and TyrH regulatory serine variants in the presence and absence of dopamine. Gray bars represent dopamine-free reactions, and white bars represent the V/K values in the presence of dopamine.

V/K values for ERK2 for TyrH and TyrH regulatory serine variants in the presence and absence of dopamine. Gray bars represent dopamine-free reactions, and white bars represent the V/K values in the presence of dopamine.