Team:Buenos Aires/ protocols
From 2013.igem.org
MINIPREP
Materials
- Resuspension buffer
- Lysis buffer
- Neutralization buffer
- Isopropanol
- 70% Etanol
- dH2O
- Ice (in ice bucket/container)
Procedure
- Centrifuge for 5 minutes at 5000 rpm 1,5 ml of bacteria culture.
- Take the pellet and add 250 ul of resuspension buffer and pipet up and down a few times.(make sure that all is properly mixed)
- Add 250 ul of Lysis buffer and invert the tubes 5 times to mix. Let rest 5 minutes. The mix must turn transparent.
- Add 250 ul of cold Neutralization buffer and invert the tubes 5 times to mix. The mix must turn turbid.
- Centrifuge at 13.000 rpm for 15 minutes.
- Transfer the supernatant to a new clean eppendorf tube.
- Add isopropanol (the same volume that is in the tube). Mix many times and put it in ice for 20 minutes.
- Centrifuge at 13.000 rpm for 20 minutes.
- Eliminate the supernatant (be carefull that the pellet does not go with it)
- Add 1 ml of etanol 70% and use a vortex to ensure the pellet mixes with the etanol.
- Centrifuge at 13.000 rpm for 5 minutes.
- Eliminate all the supernatant with a pipette (be carefull that the pellet does not go with it)
- Let the tube open until it is dried. The pellet must turn from white to transparent.
- Add 20 ul of dH2O and freeze.