(Q) in vitro translation of small protein

[Kim, Chun]

Hello.

I have a problem with my GST-pulldown assay for interacting 
domain mapping. My problem is that in vitro translated input 
proteins(smaller than 25kDA) always gives me fuzzy bands. 
But I can get clear signals after binding to beads. 
I used 15% SDS PAGE.

Any ideas would be appreciated
Thanks in advance.


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