Lineweaver-Burke plots demonstrating the inhibition of PdxB by D-2-HGA. A) 4PE vs. D-2-HGA at concentrations of 0 μM (open triangles), 50 μM (open circles), 70 μM (open squares), 300 μM (solid triangles), and 1 mM (solid circles). B) αKG vs. D-2-HGA at concentrations of 0 μM (open triangles), 70 μM (open squares), 300 μM (solid triangles), and 1 mM (solid circles).