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Reference protein give different expression - (Feb/17/2013 )

Hi all, I've been problem with beta-actin. The actin bands give different expression each other sample (between control and other treated sample). Picture attached. Help please.
What can i do?
Has anyone suggestion



Attached Image

-tierarztkarakus-

Do a coomaisse and look at your relative loaded protein concentrations.

-jerryshelly1-

tierarztkarakus on Sun Feb 17 23:35:02 2013 said:


The actin bands give different expression each other sample (between control and other treated sample).


Didn't quite understand that, are the actin bands always stronger or weaker depending on whether the cells were treated ot not ? If so, it could be that your treatment influences actin levels and I'd try another loading control (GAPDH, lamin B1....)
If not, you should determine the load with a Coomassie as indicated in the post above.

-Tabaluga-

Or determine the total protein concentration beforehand (e.g. bradford or BCA assays) and then load based on that.

-bob1-