Gel Electrophoresis
- Add 50 mL of 1X TAE buffer to a flask
- Add 0.5 g of agarose to the TAE
- Microwave for approximately 1 min or until the agarose is fully dissolved
- Once the solution has cooled to the touch, add 2.5 uL of Smart Glow 20,000X Gel Stain
- Pour the solution onto a gel tray with a comb in it
- Once it has solidified, put the gel tray into a gel box and cover the gel with TAE. Remove the comb.
- Mix samples with 5X loading dye. Load the wells with NEB 1 kb plus ladder and the samples.
- Run at 120-140 V until the dye is about 2/3 of the way down the gel.
- View under blue light reader.
Gel Extraction (with QIAquick Kit from Qiagen)
- Excise the band of DNA with a razor blade. Trim as much gel as possible and have the blue light on for a minimal amount of time.
- Weigh the gel slice. Add 3 volumes of Buffer QG to the tube containing the slice.
- Incubate in a water bath at 50 C until the gel slice has completely dissolved. Vortex every 2-3 minutes to help it dissolve. The color of the solution should be yellow.
- Add 1 volume of isopropanol to the mix.
- Add sample to a QIAquick spin column inside a 2 mL collection tube and centrifuge for 1 min at 17,900 rcf (13,000 rpm).
- Discard flow-through. Add another 500 uL of Buffer QG to the column and centrifuge for another 1 min.
- Discard flow-through. Add 750 uL of Buffer PE to the column and spin for 1 min.
- Discard flow-through. Centrifuge for an additional 1 min to remove residual ethanol.
- Transfer column to a fresh 1.5 mL microcentrifuge tube. Add 30 uL of Elution Buffer to the center of the membrane and let sit for 5 mins.
- Centrifuge for 2 mins at 17,900 rcf.
- Check concentration of the sample with Nanodrop.