Mesoplasma florum:Transposome construction
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- Cut the transposome out of the containing plasmid with PvuII enzyme, which cuts at the correct location at the mosaic end.
- Cut also with an enzyme which produces shorter fragments from the remaining plasmid backbone to make gel purification easier. Sau3AI is a good enzyme.
- Use NEB Buffer 1 with BSA which is good for both Sau3AI and PvuII.
- TT01 transposon is 2478 bp long
- Reaction
- 20 μg of plasmid DNA from a maxiprep
- 10 μl NEB Buffer 1
- 1 μl 100x BSA
- 3 μl PvuII
- 1 μl Sau3AI
- QS water to 100 μl
- Heat 37° 1 hour
- Heat kill the enzymes 20 minutes at 65°
- Add 20 μl loading dye
- Load and run on a prep gel
- Cut the band at 2478 bp from the gel
- Weigh the cut band
- Add 3x volume Qiagen QX1 buffer
- Add 30 μl Qiaex II suspension
- Heat at 50° while vortexing until completely dissolved
- Spin, discard, resuspend in 1 ml QX1 buffer
- Spin, discard, resuspend in 1 ml PE buffer
- Spin, discard, resuspend in 1 ml PE buffer
- Spin, discard, spin again, remove remaining PE buffer with 10 μl tip
- Dry at 50° for 15 minutes until the Qiaex II turns white
- Resuspend in 30 μl TE
- Spin, remove supernatent to a fresh tube with a 10 μl tip
- Add an additional 10 μl TE to the Qiaex II suspension, resuspend, spin
- Remove supernatent with a 10 μl tip
- Spin down the fresh tube to pellet any remaining Qiaex II suspension and transfer supernatent to a screw to vial
- Measure concentration and label the tube