(Thermo Scientific) and single-stranded biotinylated oligonucleotides and
complementary sequences corresponding to 31 nucleotides (15 nucleotides flanking
the SNP of interest). Nuclear extract from Jurkat, HH, and Daudi cells was
isolated using the NE-PER nuclear and cytoplasmic extraction kit (Thermofisher
Scientific) with slight modification. Binding reactions were incubated at room
temperature for 30 min and loaded onto a 6% polyacrylamide 0.5×
Criterion precast TBE gel (Biorad). After sample electrophoresis and transfer to
a nylon membrane, DNA was crosslinked for 10 min, and biotinylated probes
detected by chemiluminescence followed by film exposure. Details in