Hi everyone,
I have 2 proteins that known to have interaction. However, they cannot form stable complex when I overexpress and purify the from E.coli. Most of the time I can only observe ring-like structure that are loosely packed under TEM. Therefore, I am thinking would it be possible to crosslink them by formaldehyde inside E.coli before I lyse the cell so that I can purify some stable complex? If it is possible, any suggested protocol to follow?
Thanks!
Ellen