| Line 69: | Line 69: | ||
heating block of your thermocycler.</li> | heating block of your thermocycler.</li> | ||
<li>Pipette the following into the tube in the order listed. It adds up to a total volume of 20 μL</li> | <li>Pipette the following into the tube in the order listed. It adds up to a total volume of 20 μL</li> | ||
| + | <ol> | ||
| + | <li>7 μL sterile distilled water</li> | ||
| + | <li>10 μL plasmid DNA </li> | ||
| + | <li>2 μL 10x restriction buffer </li> | ||
| + | <li>0.5 μL Restriction Enzyme #1</li> | ||
| + | <li>0.5 μL Restriction Enzyme #2 </li> | ||
| + | </ol> | ||
<li>Mix gently by pipetting up and down a few times. You can bring all the liquid to the bottom of the | <li>Mix gently by pipetting up and down a few times. You can bring all the liquid to the bottom of the | ||
tube by spinning it briefly in the microcentrifuge at maximum speed.</li> | tube by spinning it briefly in the microcentrifuge at maximum speed.</li> | ||
Revision as of 01:23, 27 September 2019
Notebook
Document the dates you worked on your project. This should be a detailed account of the work done each day for your project.
What should this page have?
- Chronological notes of what your team is doing.
- Brief descriptions of daily important events.
- Pictures of your progress.
- Mention who participated in what task.
Using DNA distribution kit plates: Rehydration of registry DNA from kit plate
Wells in the DNA distribution kit plates contain 2-3 ng of dry DNA. This should be enough DNA for a few transformation, but insufficient for immediate restriction and ligation.
Materials
- DNA distribution kit plates
- Sterile distilled water
- Micropipette
- Sterile micropipette tip
Protocol
- Locate the well with the DNA part you need
- Using a micro pipette, draw 10 μL sterile distilled water into a sterile pipette tip
- Use the pipette tip to puncture a hole through the cover foil and into the well containing DNA you need.
- Release the water into the well and pipette up and down a few times to rehydrate the DNA you need
- Store the re-hydrated DNA in the -20C freezer. You can either leave it in the original plate, or transfer it into a separate tube (make sure to label the tube!).
- The rehydrated DNA can be used immediately to transform competent cells. As little as 1 μL should be enough for one transformation.
Restriction Digest
This protocol is for cutting approximately 500ng of plasmid with two different restriction enzymes. This should provide enough cut DNA for both ligation and agarose gel electrophoresis.
Materials
- Plasmid DNA
- 10x Restriction buffet
- Sterile distilled water
- Restriction Enzymes(EcoR1, Spe1, Xba1, and Pst1)
- Thermocycler
- (0.6 mL) Microcentrufuge tube
- Microcentrifuge
- Ice
- Micropipettes and Sterile pipette tips
- Water bath and 37C
Protocol
- Thaw all solutions and buffers needed. Homogenize the contents by gently flicking the tube. If possible, collect all liquid at bottom of tube by spinning briefly in the microcentrifuge at maximum speed. Place tubes on ice.
- Label a sterile 0.6 mL microcentrifuge tube with an identifying label for the particular restriction digestion you’re doing. Make sure that you use a permanent marker and the tube fits inside the heating block of your thermocycler.
- Pipette the following into the tube in the order listed. It adds up to a total volume of 20 μL
- 7 μL sterile distilled water
- 10 μL plasmid DNA
- 2 μL 10x restriction buffer
- 0.5 μL Restriction Enzyme #1
- 0.5 μL Restriction Enzyme #2
- Mix gently by pipetting up and down a few times. You can bring all the liquid to the bottom of the tube by spinning it briefly in the microcentrifuge at maximum speed.
- Incubate at 37 °C in water bath or thermocycler for 30 minutes to 1 hour.
- Incubate at 80 °C for 20 minutes. This will denature the restriction enzymes, which otherwise may interfere with subsequent steps.
- Store the restriction digests in - 20 °C freezer, or proceed immediately with ligation and/or agarose gel electrophoresis.
Inspiration
You can see what others teams have done to organize their notes: