Difference between revisions of "Team:CSU Fort Collins/NoteBook/June"

6.4.16

We picked E. Coli “Stellar” cells from an LB/amp plate. The cells had been transformed with pLC71. We put the cells into test tubes with 5 mL of LB and 5 µL of ampicillin and then put those in the shaker at 37℃ overnight.

Protocol for picking cells from plate to test tube:

• Materials
• Autoclaved test tubes
• 100mL LB
• 100mg/mL ampicillin
• Test tube rack
• Bunsen Burner
• P10 or P20 pipette
• Latex gloves

Procedure

• Place test tubes into the rack, label, date, initial.
• Light bunsen burner for flame umbrella.
• In each test tube: add 5mL of LB first, then, add 5 µL of AMP. Be sure that your pipette tip is submerged in the LB when adding the AMP.
• Remove lid from LB/AMP plate. Use a pipette tip, gently pick a colony.
• Eject pipet tip into test tube.
• Flame the opening of the tube and recap.
• Incubate tubes in 37℃ for approx. 16 hours.

6.5.16

We performed plasmid purification according to steps outlined in the S.O.P. in Tom’s lab. After purification we had ≈120 µL of plasmid solution. Fluorimetry determined the concentration of DNA was 317 ng/µL. Plasmid stored in iGEM box in fourth floor “VWR” fridge. Now it’s in the 3rd floor fridge (igem limonene box) 8.30.16 Mini-Prep Protocol (Zymo Research): Materials

• P1 buffer
• P2 buffer
• P3 buffer (refrigerated)
• (3) 1.7mL eppes.
Procedure
1. Pour test tube contents (no more than 5mL) into (3) 1.7mL eppes.
2. Centrifuge the eppes for 3 minutes at max speed.
3. Discard supernatant, pour carefully into waste.
4. Centrifuge 1 minute.
5. Pipette and discard supernatant.
6. Add 200µL P1 buffer to 1st eppe.
7. Pipette up and down until the pellet is dissolved.
8. Pipette the buffer w/ dissolved pellet into 2nd eppe.
9. Pipette up and down until the pellet is dissolved.
10. Pipette the buffer w/ dissolved pellets into 3rd eppe.
11. Pipette up and down until the pellet is dissolved.
12. Eppe’s 1 & 2 should be empty. Discard.
13. Add 200µL P2 by shooting in.
14. Add to all of your tubes quickly.
15. Snap all closed.
16. Inversion mix.
17. Leave tubes with only P1 & P2 for no more than 5 minutes or DNA will be damaged. Be ready to add P3.
18. Add 400µL P3 (refrigerated)
19. Inversion mix until no pink remains.
20. Let sit for 1-2 minutes
21. Centrifuge full speed for 10 minutes.
22. Setup plasmid filter columns over large Zymo collection tubes.
23. Pipette supernatant into filter column.
24. Discard pellet
25. Spin column 1 minute.
26. Discard flowthrough
27. Add 200µL Endo Wash Buffer to filter
28. Spin 1 minute
29. Discard flowthrough
30. Add 400µL Plasmid DNA Wash Buffer
31. Spin 1 minute
32. Discard flowthrough
33. Spin 2 more minutes to dry (very important).
34. Move filter to labeled 1.7 mL eppes
35. Label
36. Add 16µL 10mM Tris HCl pH 8.0 to filter column
37. Let sit 2 minutes
38. Spin 1 minute
39. The flowthrough contains the DNA. Don’t throw it out.
40. (Repeat) Add 16µL 10mM Tris HCl pH 8.0 to filter column
41. Let sit 2 minutes
42. Spin 1 minute
43. The flowthrough contains the DNA. Don’t throw it out.
44. Throw away filter. Keep flowthrough in labeled eppe.

6.6.16

60 µL of plasmid were removed from our stock and digested with SAL1 and CutSmart buffer.

6.7.16

We ran a gel purification of our cut plasmid, stained and imaged it on the third floor. File name: limonene plasmid 1 2016-06-07

George cut our plasmid out of the gel (the largest band on the gel). Our cut gel weighed 0.48g

We then used a kit to dissolve the gel and purify the plasmid. Fluorimetry showed the concentration to be 220 ng/µL

6.8.16

First try at Infusion cloning.

1. 35 µL Stellar E.coli and 2.5 µL of post infusion pLC71
2. Cells plated and left to incubate around noon.
3. gene block: 100ng (μL/25ng) = 4μL
4. pLC71: 100 ng (μL/220ng) = 0.45μL
5. In-Fusion pre-mix: 2μL
6. Distilled water: 3.55μL
7. 50°C for 15 minutes

6.9.16

Took transformed cells out of 4th floor incubator at 11:00 AM. No growth on either plate.

Re-transforming with the same infusion mix that we made yesterday

1. Stellar cells - 1501846A
2. Cell & DNA mixed at 12:08
3. The cells were kept on an ice/water miss the whole time. The tubes where cells & DNA were mixed were also on ice before the mix.
4. The infusion mix was stored in the eppe block for about 5 minutes.
5. LB/amp plates by RZ 5/20/16
6. Heat shock at 12:34 at 44 celsius for 45s then directly back on ice.
7. Plated at 12:40
8. Incubate 4th floor 49°C at 12:47

6.10.16

1. Took stellar cells transformed w/ infusion mix out of the incubator at 11:40
No growth, only bubbles. Second try at infusion mix Everything on ice for 10 minutes Diluted plasmid w/ distilled water from sink.
• 0.9uL 220ng/uL + 1.1uL dH2O
Transformation:
1. E. Coli was pulled out of the freezer at 1:50.
2. 1:55, infusion mix was put in heat block w/ water at 50°C
3. Infusion mix was then put on ice and then mixed with E. Coli 2 minutes later.
4. We also transformed the same cells with a control of cut pLC71
5. Incubate all 3 tubes on ice for 30 minutes
6. Heat shock at 43°C for 45s
7. Plated after a 5 minutes back on ice (2:45)
8. LB/amp plates - AS 5/26/16
9. Incubated on 4th floor at 37°C overnight

6.11.16 No growth on any plates except for 2 colonies on the control (disgested pLC71)

6.21.16

Resuspending primers

1. Uncap LS p1, p1000 to add 292 μL distilled autoclaved H2O.
2. A little bit of water would fall out of the pipet tip. Tip was not full. Still, only a very small amount missing.
3. Recap.