Recycling Cyanogen bromide activated sepharose affinity columns?

Sonya Clark szsclark at
Thu Jan 27 21:22:43 EST 1994

Dear Netters - I am purifying antibodies from a polyclonal prep by 
running them over a CNBr-activated Sepharose affinity column of my 
antigen.  As CNBr-activated Sepharose is expensive &/or horrible to make, 
I'd like to strip the column of the antigen currently bound, and re-use 
the sepharose to make another affinity column.  Does anyone have a protocol 
to do this?  Would eluting the column with harsh eluents (eg. 
Guanidine/urea/SDS) work? and would I then be able to re-use the sepharose 
to couple another antigen? Any advice appreciated. Cheers.

Sonya Clark.
Botany Dept.,
szsclark at

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