| 1 M Tris-HCl, pH 9.5 |
5 mL |
100 mM |
| 1 M MgCl2 |
2.5 mL |
50 mM |
| 5 M NaCl |
1 mL |
100 mM |
| 20% Tween 20 (Sigma-Aldrich P1379) |
250 μL |
0.1% (v/v) |
| H2O (sterile)
|
to 50 mL |
|
|
| Combine reagents immediately before use. At room temperature, the solution eventually will precipitate. |