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Anyone has run a PAGE with reducing agents in-gel??


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3 replies to this topic

#1 yerkoliko

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Posted 16 May 2011 - 12:20 PM

Hello. I have problems with my samples (drosophila eye homogenizated) and I suspect that some complexes are formed in-gel. That's because in Western BLot the bands appear in stacking gel (even in the top of the well!!). I tried to solubilize with SDS, Tritón and CHAPS, but the result was the same, so I want to try to add an reducing agent directly to the gel and 8M urea.


Someone knows a protocol to do this.

Thks

#2 bob1

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Posted 16 May 2011 - 06:51 PM

First of all: how big are the proteins you are looking at?

What percentage gel are you running?

What denaturing conditions are you currently using?

#3 yerkoliko

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Posted 16 May 2011 - 07:46 PM

130 KDa and 72 KDa

8% Resolving, 4% Stacking

Denaturing conditions:
Without urea: SDS, BME, Heat
With urea: SDS or Tritón or CHAPS, BME, incubation 30' 30 °C


First of all: how big are the proteins you are looking at?

What percentage gel are you running?

What denaturing conditions are you currently using?



#4 knuf

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Posted 17 May 2011 - 05:22 AM

some aggregates may be physically crosslinked and need more stringent solubilization in guanidine




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