1. Making the Gel:

Urea, high quality 7.2 g

10X TBE 1.5 ml

30% acrylamide/bis 2.5 ml

or use ready to go 40% acrylamide 1.9 ml

Deionized H2O up to 15 ml

Stir at room temperature until urea has dissolved then add:

10% APS 120 ul

TEMED 16 ul

For an 8% gel use 4 ml of 30 % acrylamide (3 ml of 40%)

For a 10% gel use 5 ml of 30% acrylamide (3.75 ml of 40%)

2. For denaturing gels only, heat all tubes for 3-4 minutes at 90’C.

3. Vortex, spin down and put on ice.

4. Pre run gel for 5 minutes, rinse out well with buffer then immediately load gel.

5.Run for approximately 1 hour at 250 volts in TBE buffer.

6. Transfer to positively charged nylon membrane according to manufactures protocol.

Recommended % acrylamide: Size of Bands: Bromophenol Blue:

(Denaturing gels)

4 >250 30

6 60-250 25

7 40-120 20

10 20-60 10