Construction

From 2006.igem.org

Revision as of 01:10, 23 October 2006

October 21, 2006

Massive To-do List

The following is a guideline. Day-to-day details need to be filled in as we progress. Change colors from red to black as each task is completed.

Construction:

• Gel-extract Q03400, Q04400, Q04510 (2005/2006) minipreps
• Transform and miniprep I13522 (2006) (amp) from registry DNA-2 15H
• Transform and miniprep I13504 (2005/2006) (amp) from registry DNA-1 12D (2005/2006)
• Miniprep 6 UT1 for ligation
• Ligate UT1 with Q03400, Q04400, Q04510 (2005/2006) (6 ligations) (Name UT6-12)
• If possible, ligate R0011 (2005) with I13507 (2005) in parallel (Name UT13)
• Ligate UT6-12 with I13504 (6 ligations) (Name UT14-19)
• Ligate UT14-19 with UT13 (6 ligations) (Nam UT20-25)

Testing:

• Temperature-test and Arabinose/IPTG-test UT3 (See below for protocol)
• Plate-test UT2, UT3, DH5a, UT13, I13522

Guidelines for Plate-test:

1. On an Amp plate, make 4 sectors (500 uL?) with varying arabinose (0.02%, 0.2%, 2%, 20%) and making sure they don’t touch each other (otherwise diffusion will happen and they’ll be the same concentration), let the arabinose area dry.
2. Take o/n of UT3-DH5a and take out 200 uL and add 800 uL of fresh LB and incubate for 1 hr.
3. Spin down the cells at 3000 RPM for 5 min and remove 800 uL of supernatant. Resuspend cells with the remaining 200 uL and gently spread onto plate

Guidelines for Temperature-test:

1. Put a constant amount of arabinose (either 0.02% or 0.2% - don’t want TOO much repression) in each dilution.
2. Grow dilutions at 37C until the absorbance is ~0.6 using the GFP ABS program. Then take some tubes out and put 1 mL into an Eppendorf tube.
3. Use the white filter caps and put them on each Eppendorf tube (to allow air in, but to protect against contamination)
4. Set mixer to the equivalent to the shaker in the incubator (remember it’s a smaller tube, so there probably needs to be more force on it to get it to shake).
5. Set temperature to 22C
6. Check the absorbance after a couple of hours and prepare the samples when the absorbance matches the absorbance of the tubs in the incubator (these should be ready before the 22C ones are ready)
7. Hopefully we’ll see a significant difference in fluorescence: cold should fluoresce less than hot.

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October 19, 2006

Melinda:

• Miniprepped Q04400 (2005/2006) and Q04510 (2005/2006)
• Made o/n of Q03400 (2005/2006), (3) UT2-DH5a, (2) DH5a, and (1) DH5a/DH5a-z1 for freezer stock and fresh plate

To-Do List:

• Miniprep Q03400 (2005/2006)
• Repeat Oct 18 test, except with GFP and proper controls
• Digest and check J04450 (W), Q03400, Q04400, and Q04510 (2005/2006). If correct, move on with gel extraction and ligation.
• Make 20% Arabinose, and 2 blank agar plates

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October 18, 2006

Andy, Konstantin:

• Transformed and plated Q03400 (2005) (2006)
• Gel-extracted UT1 DEF with EcoRI/SpeI (2500-3000, 5000, 8000), 8000 band bright, digestion appeared incomplete
• Made A, K, AK plates
• Made o/n of Q04400 (2005) (2006) Q04510 (2005) (2006)
• Tested UT3 in DH5a with 0%-2% arabinose

To-Do List:

• Make o/n of Q03400 (2005) (2006)
• Miniprep Q04400 (2005) (2006) and Q04510 (2005) (2006)
• Replate UT1 with miniprep from a good conlony
• Miniprep Q04400 (2005) (2006) Q04510 (2005) (2006) and check to see if bands are correct. If so, digest with EcoRI/XbaI and gel extract
• Ligate with UT1

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October 17, 2006

Melinda:

• Double Digetsed J04450 (W), UT1 DEFG with XbaI/SpeI using Buffer 2
• Results:
  • J04450 (W) (1 band)
  • UT1 D (5000 – 4000, 3000 – 2500)
  • UT1 E (2 bands)
  • UT1 F (2 bands)
  • UT1 G (2 bands)
• Transformed DH5a cells with Q04400 (2005/2006), Q04510 (2005/2006)
• Made o/n of DH5a and (3 vials) of DH5a UT3

Note – Change in protocol:

• After incubation for 1 hour, centrifuge tubes for 5 min @ 3000 RPM to pellet cells
• Remove 800 uL of supernatant
• Resuspend pellet with remaining 200 uL
• Spread on plate and wait ~15-20 min.

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October 16, 2006

Melinda:

• Checked parts, including the relevant parts from Waterloo (W):
  • I0500 (W): (5000 – 4000, 1500 – 1000) – correct!
  • J04450 (W): (2500 – 2000) – plasmid is correct, but no part?
  • J06801 (W): (8000 – 6000) – not correct!
  • E0240 (W): (4000 – 3500, 3500 – 3000, 1000 – 750) – part is correct?
  • I12006 (W): (5000 – 4000, 2500 – 2000) - plasmid is correct, undigested plasmid?
  • UT2 2: (3500 – 3000, 2500 – 2000, 2000 – 1500) – correct, extra band?
  • UT2 4: (3500 – 3000, 2500 – 2000, 2000 – 1500) – correct, extra band?
  • UT3 7: (3500 – 3000, 2500 – 2000) – correct!
• Viewed cells induced by IPTG under microscope and verified the functionality of UT2/UT3 in DH5a and DH5a-z1

To-Do List:

• Repeat Double Digest of J04450 (W) and UT1 ABCD with XbaI/SpeI (Run undigested plasmids beside each double digest)
• Make more Amp plates
• If digest is successful, transform DH5a cells with the successful parts
• Find tetR replacements for cI and ligate those parts together.

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October 15, 2006

Charles:

• Made o/n of the newly plated UT2 2/4 and UT3 7 as well as UT2/UT3 freezer stock

To-Do List:

• Make sure the cells fluoresce by diluting in IPTG

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October 14, 2006

Charles, Jovan:

• Mini-prepped UT2 2/4 and UT3 7
• Transform UT2 2/4 and UT3 7 into DH5a-z1 and DH5a cells
• Continue with the IPTG test for the rest of the colonies that we weren’t able to test yesterday

To-Do List:

• Measure absorbance spectrum of Arabinose
• Make o/n of working UT2/UT3 for repeat of IPTG test.
• Look into using tetR and tet pL instead of cI and Prm+

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