Fig. 3: The enzymatic activity of LDHA is not directly inhibited by BAP1 protein.

A Human-derived full-length LDHA and full-length BAP1 were expressed in E. coli, and the proteins were purified using Ni column affinity chromatography and GST column affinity chromatography, respectively. B Examination of the direct interaction between GST-BAP1 and LDHA in vitro by GST-Pulldown. C–E The purified LDHA proteins were used for kinetic assays of enzyme activity, and the absorbance was measured at 340 nm to determine the amount of NADH. C Only substrate was added in the Control group, and LDHA was added in the LDHA group. D The enzymatic activity of LDHA was completely inhibited after the addition of 50 mM oxamate to LDHA. E The enzymatic activity of LDHA was not significantly changed after the addition of an equal amount of BAP1 protein to LDHA.