I have been trying to check the levels of ROS and NO in RAW cells after treating with my recombinant protein. Every time I do the experiment, I get high levels even in Proteinase treated group. I treat the protein with polymyxin beads to remove LPS. I do not get such high readings in the cells that are treated with active protein. Can anyone explain?
I have run the proteinase treated sample on the SDS gel to check if the degradation had happened. I do not see any band.