Jones Lab:Protocols:DNAextraction: Difference between revisions
From OpenWetWare
Jump to navigationJump to search
(New page: <h3><font style="color:#F8B603;">DNA Extraction</font></h3> ---- #Add two ball bearings to each 1.2 ml tube containing tissue. #Add 300 ul CTAB #Disrupt tissue by shaking with paint shaker...) |
(No difference)
|
Revision as of 05:28, 14 November 2012
DNA Extraction
- Add two ball bearings to each 1.2 ml tube containing tissue.
- Add 300 ul CTAB
- Disrupt tissue by shaking with paint shaker for 2 min. Repeat if clumps of tissue remain.
- Centrifuge briefly
- Loosen lids and heat at 65°C in water bath for 30 min.
- Let cool to room temperature (15min)
- Add 300 ul chloroform (done in hood).
- Shake for 15 sec
- Centrifuge at 3000 rpm for 15 min.
- During centrifugation, prepare tubes by adding 200 ul isopropyl alcohol to each tube
- Transfer 200 μl of the chloroform-extracted supernatant to the new plates. Be very careful not to transfer any of the goop from the interface, or any of the organic layer.
- Shake for 15 sec
- Centrifuge at 3250 rpm for 15 min.
- Pour off the liquid into the sink; the pellet of DNA should stay behind.
- Wash with 200 μl of 70% ethanol, re-cover the tubes and centrifuge for 7-10 min. at 3250 rpm.
- Dump off the liquid again
- Pipette off remaining liquid
- Air dry (covered in towel) for 10 min
- Resuspend the pellets in 100 ul of dH2O and let sit for >3 hours at 4°C (I usually leave them overnight).
- Use 1 μl in a 10 μl PCR reaction.