Restriction Enzyme Digest
Procedure:
For 50 uL Reaction
1 ug of DNA
5uL of respective NEB Buffer (10X)
1uL of enzyme 1
1uL of enzyme 2
Remaining should be MilliQ Water
In rxn tube, mix the following order: 1. Water; 2. Buffer; 3. DNA; 4. Enzymes
Incubate at 37C for 30 minutes (If you have time save enzymes otherwise incubate for 1hr) then heat kill at 80C for 20 mins
Note: heat kill temperature will depend on restriction enzymes, check the enzyme heat kill temperatures
If you are worried about the backbone reannealing, treat the backbone with Shrimp Alkaline Phosphatase (rSAP):
rSAP can be added during the digest (0.5ul)
rSAP can also be added after the digest:
1 pmol of DNA ends; 1pmol of DNA ends is about 1ug of 3kb ladder
2ul of 10X Cutsmart Buffer
1 unit of rSAP (if you have the 500 unit tube, then add 0.5ul)
MilliQ Water up to 20ul
Incubate at 37C for 30 mins
Heat Inactivate at 65C for 5 mins
- Published on Jun 10, 2019
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