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Team:Virginia/Protocols
From 2008.igem.org
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QIAGEN Mini-Prep
- Spin cell broth down in centrifuge at >13200 revolutions per minute in microcentrifuge (generally 4 minutes is adequate).
- Pour off remaining broth and resuspend in 250 uL of Buffer P1 (LyseBlue is nice to have).
- Add 250 uL Buffer P2 (for cell lysis). Invert microcentrifuge tubes 4-6 times. Do NOT allow to run for more than 5 minutes.
- Add 350 uL Buffer N3 and invert tubes another 4-6 times.
- Spin in microcentrifuge at >13000 revolutions per minute for ten minutes.
- Transfer supernatant to provided spin column.
- Run spin column in microcentrifuge for 60 seconds. Discard flow-through.
- Add 0.5 mL Buffer PB. Centrifuge for 60 seconds. Discard flow-through.
- Add 0.75 mL Buffer PE. Centrifuge for 60 seconds. Discard flow through.
- Centrifuge for an additional 60 seconds.
- Transfer spin-column top to a microcentrifuge tube for collection.
- Add 50 uL Buffer EB to center of column. Allow to sit for one minute.
- Centrifuge for one minute. The clear liquid in the bottom is your DNA solution.
Electrophoresis Gel
- In a 100 mL Erlenmeyer flask, place and pour: 0.5 g Agar and 50 mL 1X TAE Buffer
- Microwave for 30 seconds and then swirl the flask
- Microwave for 15 seconds (caution: do not let the solution boil out of the flask)
- Pipette 2 microliters of Ethidium Bromide into the gel solution and then swirl flask
- Ethidium Bromide stains the plate for DNA to be observed under UV light
- NOTE: Ethidium Bromide is a hazardous chemical and must be disposed of properly - this includes the gel itself
