Difference between revisions of "Team:Carnegie Mellon/Protocols"
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<li>Remove supernatant.</li> | <li>Remove supernatant.</li> | ||
<li>Repeat 3 times and resuspend in 1 mL of Bead Wash Solution.</li> | <li>Repeat 3 times and resuspend in 1 mL of Bead Wash Solution.</li> | ||
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Revision as of 18:41, 17 November 2015
Protocols.
How we did the things we did.
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His-Tag Soluble Protein Extraction
- Centrifuge 1.5 ml of culture for 1min full speed at 15000 rpm.
- Remove supernatant.
- Add 250 µl of extraction buffer (1% octyl-beta-thioglucoside in 10mM Tris-Cl, pH7.5).
- Incubate at room temperature for 10 min.
- Remove 50 µl of Ni-NTA in 10 mM Trischloride bead solution and place in new tube for each purification.
- Add 1 mL buffer (see table).
- Centrifuge at 800 rpm for 30 seconds.
- Remove supernatant.
- Repeat 3 times and resuspend in 1 mL of Bead Wash Solution.
MiniPrep
Minipreps of MACH Cells Expressing Flourescence
Purpose: To isolate plasmid DNA from MACH cells.
Procedure:
- Set up overnight cultures for miniprep.
- Make the following reaction recipe:
- 5 mL LB
- 5 µL Chlorophenical
- 1 µL overnight colony
- Incubate in 37°C for 16-18 hours.
- Follow the Life Technologies Miniprep Kit Protocol.
Restriction Enzyme Digestl
Restriction Enzyme Digest
Procedure:
- Prepare the following restriction enzyme digestion solution for J23108, J23109, J23111.
- Digest at 37 °C for 1 hour.
- Follow the Life Technologies Restriction Enzyme Digest Protocol.
Reagent | Amount (µL) |
10X Fast Digest Buffer | 2 |
Plasmid DNA | 12 |
Restriction Enzyme XbaI | 1 |
Restriction Enzyme SpeI | 1 |
Water (to bring up to volume) | 2 |
Total Volume | 18 |
Agarose Gel Electrophoresis
Aragose Gel Electrophoresis
Procedure:
- 1% aragose gel made of:
- 50 mL 0.5X TAE
- 0.5g agarose
- 2.5 µL ethidium bromide
- Run at 114V.
Gel Extraction
Gel Extraction
Procedure:
- Make 250-750 µl binding buffer (depending on mass of gel cut-out).
- Incubated at 42℃ until gel is melted.
- Follow Thermo Scientific's GeneJET Gel Extracton Protocol
Ligation
Ligation
Procedure:
- Make the following ligation reaction.
- Ligate for 10 minutes at room temperature.
- Put on ice until ready for transformation.
Reagent | Amount (µL) |
Promoter DNA | 1 |
Insert DNA | 7 |
Ligation Buffer | 1 |
Ligation Enzyme | 1 |
Total Volume | 10 |
Transformation