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RNAse protection assay


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#1 marc_U7snurp

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Posted 21 February 2005 - 11:02 PM

Hi everyone,

I'm doing a RNAse protection assay but I never see protected bands on the gel only background, even in the negative control i still have background. The sequence was sequenced twice, and the are antisense to the probe I want to see, the Tm of the shortest protected band was calculated (74C) and I incubated the hybridisation mixture o.n. @ 65C. And the probes are not degraded.

Did anyone have the same problems and could solve them finally?

Thanks :)

#2 labprincess

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Posted 22 February 2005 - 08:01 PM

Is your probe good? Are you running just the probe in a gel lane? If the probe is cruddy sometimes all ya get are shmeers..... :D I am an expert in bad probe makin'!! :)

Labprincess


PS We hybridize at 56c overnight.....but then again we use a purchased DNA template set

#3 labprincess

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Posted 22 February 2005 - 08:08 PM

Oh....yeah...I just notice that you said that your probes are not degraded...sorry :D .....in that case.....I don't know why :) .......all I can say is change out your reagents......Some of them can get kinda picky for RPA's....



Labprincess




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