Materials

Procedure

1. Add 25g LB broth and 15g agar into 1L DDW.
2. Autoclave

Materials

Procedure

Pellet Cells

1. Add 1ml of an overnight culture to a 1.5ml microcentrifuge tube.
2. Centrifuge at 13000 rpm for 2.5minutes to pellet the cells.
3. Remove the supernatant.

Lyse Cells

4. Add 1ml of an overnight culture to a 1.5ml microcentrifuge tube.
5. Centrifuge at 13000 rpm for 2.5minutes to pellet the cells.
6. Remove the supernatant.

Protein Precipitation

7. Add 200ul of Protein Precipitation Solution to the RNase-treated cell lysate. Vortex vigorously at high speed for 20seconds to mix the Protein Precipitation Solution tieh the cell lysate.
8. Incubate the sample on ice for 5minutes.
9. Centrifuge at 13,000rpm 3minutes.
10. Transfer the supernatant containing the DNA to a clean 1.5ml microcentrifuge tube.
Note: Some supernatant may remain in the original tube containing the protein pellet. Leave this residual liquid in the tube to avoid contaminating the DNA solution with the precipitated protein.
11. Add 600ul isopropanol.
12. Gently mix by inversion until the thread-like strands of DNA form a visible mass.
13. Centrifuge at 13000rpm for 2minutes.
14. Carefully pour off the supernatant.
15. Add 600ul of room temperature 70% ethanol and gently invert the tube 5 times to wash the DNA pellet.
16. Centrifuge at 13000rpm for 2minutes. Carefully aspirate the ethanol.
17. Drain the tube on clean absorbent paper and allow the pellet to air-dry for 10-14minutes.
18. Add 50~100 μl TE buffer and rehydrate the DNA by incubating at 65℃ for 20min. Periodically mix the solution by gently tapping the tube. Alternatively, rehydrate the DNA by incubationg the solution overnight at room temperature or at 4℃.

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Protocol 7 content 아졸려 언제와 점심먹고 왔는데 아무도 없어