stripping Northern blots

[Anton Scott Goustin]

Tori Brophy <sibley at genetics.washington.edu> wrote:
>pmsmith at uniwa.uwa.edu.au (Penny Smith) wrote:
>>I am using Hybond-N+ for Northern blots and have used the Amersham
>>protocol for stripping them (ie pour on boiling 0.5% SDS and allow to cool
>>to room temp.).  This strips the blots but also seems to strip off the RNA
>>as well.  Does anyone have any suggestions.
>>
>>Penny Smith
>>Botany Dept.
>>University of Western Australia
>>pmsmith at uniwa.uwa.edu.au

We have used hot (bring to bubbly in microwave, then remove) 1% glyerol
plus 0.1% SDS.  Just leave it there for 2 min, then wash the blot as
usual (1X SSC, 0.1% or whatever you use).  Check to see that the signal
is truly removed by exposing O/N.  This method is quite gentle and very
effective.  It can even remove some dots and spots.