Figure 2From: Quaternary structures of recombinant, cellular, and serum forms of Thymidine Kinase 1 from dogs and humansSteady state kinetics of recombinant canine and human TK1. Substrate saturation curve of canine (A) and human (B) TK1 with dThd (■) and AZT (●) as the variable substrate. Activity data were fitted to the Michaelis-Menten equation. The assays were repeated three times and error bars are shown.Back to article page