Gel extraction with Invitrogen Purelink Gel Extraction Kit.
- DNA embedded in gel
- Purelink column
- Gel solubilization buffer
- Wash buffer
- Elution buffer or sterile ddH2O.
- Excise DNA from gel with razor blade. Place in 1.5 mL tube and weigh gel piece. Let V be the weight of the piece in mg.
- Add 3V μL Gel Solubilization Buffer. Incubate 55 °C 10 min or until gel is completely dissolved.
- After gel is completely dissolved, incubate 55 °C additional 5 min.
- Incubate RT 2 min.
- Add 1V μL isopropynol. Mix and spin.
- Apply to column. Centrifuge max speed 1 min. Discard flowthrough. (Maximum application volume is 700 μL, so for larger volumes, repeat until all of the DNA is bound to column membrane.)
- Apply 700 μL wash buffer to column. Centrifuge max speed 1 min. Discard flowthrough.
- To dry, centrifuge max speed 3 min. Place column in a new 1.5 mL tube.
- Apply 50-100 μL elution buffer or sterile ddH2O to column membrane. Avoid touching membrane with tip. Incubate RT 10 min.
- To elute, centrifuge 1 min max speed. Discard column. DNA is now in bottom of 1.5 ML tube.
- Quantify DNA sample by quantifluore.
- Label side of tube with the following:
- [DNA] in nM
- "gel purified"
- Store at -20 °C.
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- SC 17:57, 25 July 2012 (EDT):