Help! Quantification of total RNA, equal loading
soohwan at mail.utexas.edu
Tue Jun 6 21:23:30 EST 1995
I found difficulty in loading same amount of total RNA in wells of RNA gel.
I isolated total RNA from different tissues of plant and checked the quality
of the RNA by seeing the ratio of A280/260
It seems that the quality is good because They ranges 1.8-2.0.The problem
arose when I loaded them and cheched the amount by EtBr staining. I loaded
same O.D of each RNA for different tissues.I stained the gel with EtBr to
confirm equal loading of the RNAs.What I found was different amount of RNAs
in each sample(tissue) judging from the comparison of rRNA intensity.
The differences were up to 2 times. I need to get equal loading because I
am working on the comparison of expression level of some genes.
Do I need to adjust the amount of the loading and ignore O.D260 to get equal
loading in EtBr staining or Do I need to depend on O.D value and ignore staining
intensity? I need help.
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