DNA-Mobility-Shift with Biotin labeled Oligo?

[Hans Bojar]

Hi Bio-Netters,

Does anybody know something about a gel mobility shift assay, whitch  uses 
biotin-labeled oligonukleotides?

I synthesized a dubblestranded oligo of the estrogen response element. The 
oligo is labeled on both 5´ ends. Do I have a chance to see a gel mobility 
shift, by mixing the oligo with crude or purified estrogen-receptor extracts. 
Blotting and Streptavidin-POD assay shall be used for detection.
In the normal procedure always 32P is used. 

Who knows a method or protocol that could help me?

Thanks in advance
Hans-Bernd Prisack
Onkologie Duesseldorf Germany