I would like to avoid the use of chaotropic agents such as guanidium or UREA. Can somebody suggest to me if alcohols can serve the same purpose?
probably not.
- alcohols precipitate proteins, even if they
are denaturing (particularly at higher temperatures)
If the problem is the removal of urea and guanidin, you can consider the use of sodium deoxycholate (DOC). This chaotropic agent precipitates in acidic conditions (like 0.5% formic acid), and can be easily removed with gentle centrifugation.
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