Daniel:Protocols/EtOHPrecip
Jump to navigation
Jump to search
Ethanol Precipitation[edit]
Purpose: To purifiy DNA.
Protocol[edit]
1. Add:
Chemical | Volume |
100% EtOH | ≥ 2.5X |
3 M NaOAc | 0.1X |
Glycoblue | 1/300X |
where X = volume of the sample
2. Incubate for at least 1 hour at -80 C For smaller fragments it is helpful to incubate overnight 3. Centrifuge at 4 C 4. Remove supernatant and add 750 uL chilled 75% EtOH 5. Centrifuge at minutes at 4 C 6. Dry the pellet in the hood 7. Resuspend pellet in desired volume ddH20 8. Store DNA at -20C
Recommended Centrifuge Times[edit]
Spin | Size Tube | Time | RPM |
1 | 15 mL | 30 | 3000 |
1 | 1.5 mL | 25 | 12000 |
2 | 1.5 mL | 10 | 10000 |