Another suggestion that comes to mind is crosslinking via Cys, are you purifying under reducing conditions ? Or since you have inclusion bodies they're in general not correctly folded hence expose hydrophobic regions and can interact with other proteins, to avoid unspecific interaction add >20% glycerol to your lysis buffer.

Jürgen

On 23 Sep 2008, at 00:51, Meg wrote:


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Jürgen Bosch
University of Washington
Dept. of Biochemistry, K-426
1705 NE Pacific Street
Seattle, WA 98195
Box 357742
Phone:   +1-206-616-4510
FAX:     +1-206-685-7002
Web:     http://faculty.washington.edu/jbosch

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