01/15/13
- Golden gate assembly: test different ligase buffers
Golden Gate Assembly optimization
| Buffer | Tris-HCl | MgCl2 | DTT | ATP
|
| 10x Promega | 300 mM (pH 7.8) | 100 mM | 100 mM | 10 mM
|
| 10x NEB | 500 mM (pH 7.5) | 100 mM | 100 mM | 10 mM
|
| 2x Roche | ? | ? | ? | ?
|
- Make Promega buffer from scratch.
- Golden Gate assembly reactions
1, 2. Promega - hPCD+BL01+pSB1A3
3, 4. Promega - pSB1A3
5, 6. NEB - hPCD+BL01+pSB1A3
7, 8. NEB - pSB1A3
9, 10. Roche - hPCD+BL01+pSB1A3
11, 12. Roche - pSB1A3
| Reagent | Promega (1,2) | Promega (3, 4) | NEB (5, 6) | NEB (7, 8) | Roche (9, 10) | Roche (11, 12)
|
| gg2 pSB1A3 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0
|
| gg3 hPCD | 1.0 | --- | 1.0 | --- | 1.0 | ---
|
| gg4 BL01 | 1.0 | ---
|
| 10x ligase buffer | 1.0 | 1.0
|
| NEB T4 lgase | 0.25 | 0.25
|
| BsmBI | 0.5 | 0.5
|
| dH2O | 5.25 | 7.25
|
| | 10.0 | 10.0
|
Thermal cycler
- [45°C, 2 min.; 16°C, 5 min.] x25
- 60°C, 20 min.
- 80°C, 20 min.
|