Figure 5
From: Enzymatic, immunological and phylogenetic characterization of Brucella suis urease
Inhibition of B. suis urease by thiourea. The concentrations of urea were 4 mM (□), 8 mM, 10 mM (Δ) and 20 mM (×). The combination of the two graphs, Dixon plot (A) and the parallel lines in graph (B) indicate a competitive inhibition, with a Ki of 26.12 ± 2.30 mM determined from the intersection point of the lines in (A) [47]. Results are from a representative experiment using a single enzyme preparation.