How to show protein interaction?

[zinc]

"Thorsten Schmidt" <Thorsten.Schmidt at rz.ruhr-uni-bochum.de> writes:

> 
> Dear Reader!
> 
> I have a protein and I just want to test if it forms dimers, trimers etc.?
> (The protein was purified by HisTag-Chromatographie and is in solution
> (20mM Tris, 0,5 M NaCl, 1 M Imidazol))
> What is the simplest way to do this?

well, i would either run it on a native gel with good standards, do
some gel filtration chromatography or if you have access to one, use
equilibrium sedimentation centrifugation.

-pjf
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