Team:US AFRL CarrollHS/Measurement

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Transformations

BI21 Cells:

  1. Thaw 50 µL vial of BL21 cells on ice
  2. Inoculate 2µL DNA into 50µL BL21 cells
    • incubate on ice for 30 minutes
    • heat shock at 42℃ for 10 seconds
    • incubate on ice for 5m
  3. Inoculate 250µL LB into vial
    • incubate at 37℃ with shaking for 1.5 hours
  4. Plate 1x/9x

JM109 Cells:

  1. Thaw vial of JM109 cells on ice
  2. Label 14 mL Falcon tube & plane on ice
  3. Inoculate 50 µL JM109 cells into Falcon tube
  4. Inoculate 2µL DNA into 50µL JM109 cells
    • incubate on ice for 20m
    • heat shock at 42℃ for 45 seconds
  5. Inoculate 950µL LB into vial
    • incubate at 37℃ with shaking for 1.5 hours
  6. Plate 1x/9x


Electrophoresis/Gel Protocols

1% Agarose Electrophoresis Gel

  1. Add 0.35 g agarose to 35 mL 1x TAE in 100mL conical flask
  2. Heat in microwave for 35 seconds
  3. Swirl and heat in microwave for 25 seconds
  4. Swirl and heat in microwave for 15 seconds
  5. Swirl and heat in microwave for 7 seconds
  6. Swirl and ensure no ‘floaties’
  7. Cool outside of conical flask with water until ‘hand not’
  8. Pour into gel mold and add well comb

Gel Extraction

  1. Use ethanol-wiped scalpel to excise appropriate bands
  2. Mix and incubate at 50°C for 10 min
    • Vortex every 2 mins until gel slice is completely dissolved
  3. Place nucleospin column into 2mL collection tube
    • Add sample
    • Centrifuge at 11,000 xg for 1 minute
    • Discard throughflow and place column back in same tube
  4. Add 700 mL Buffer NT3
    • Centrifuge at 11,000 xg for 1 minute
    • Discard throughflow and place column back in same tube
  5. Repeat step 4
  6. Centrifuge at 11,000 xg for another minute
    • To remove buffer
      • Discard throughflow
      • Centrifuge at 11,00 xg for add minute
      • Place column in a clean, labelled 1.5 mL tube
  7. Add 25 mL prewarmed (50°C) Buffer NE
    • Incubate at 50°C for 5 min
    • Centrifuge at 50 xg for 1 minute
    • Centrifuge at 11,000 xg for 1 minute

Plasmid Transformation Protocol

  1. Aliquot 1 ml media into 1.5 mL tubes
    • Place in 42°C waterbath
  2. Prechill labelled 14 mL round-bottom falcon tubes
    • Add mL cell culture to tube
    • Add appropriate amount of ligase rxh (2-2.5 L)
    • Incubate in nice for 20 minutes
  3. Heat shock cells by placing at 42℃ for 45 seconds in waterbath
    • Place on ice for 2 minutes
  4. Add 950 mL preheated media to each tube
    • Incubate at 37℃ with 215 rpm shaking for 1.5 hr -> 20 minutes

Plating

  1. Plate on LB-antibiotic plates
    • Plate 100 ml for 1x transformation
    • Plate 100 mL 9x centrifuge remaining transformation at 2000 xg for 5 minutes and resuspended pellet in 100 L media

Plates Protocol

  1. Follow LB Agar Recipe
    • Make sure to put stirring bar in water
    • Needed to make into homogenous gel
    • Needs to be sterile
  2. Put into Autoclave
    • Lid should not be too tight
  3. Put in ice bath42°C
    • Cool till not burning hand
    • Put on stirring plate
  4. Put sterilized plates in Lamenia shield
  5. Using micropipette put .5 mL of chlor. And amp. agar solution
    • 1000x dilution
    • Amp. has to be defrosted in dark drawer
  6. Pour solution into plates
    • Thin layer fill bottom
    • Take lid slightly off to prevent condensation

QIA Prep Spin Mini Prep Kit

  1. Example for 18 mL LB add
    • 18 L20 mg/ L Kanamycin (antibiotic)
    • 18 L 50 mg/ L ampicillin
  2. Aliquot 3.5 mL into labelled round bottom falcon tubes
  3. Using sterile toothpicks- pick a single colony forming unit (cfu) and inoculate tube
    • Incubate overnight at 37°C with 215 rpm shaking
  4. To 100 mL 60% glycerol stock, add 300mL overnight culture to appropriately labelled tube
    • Store at -80°C
  5. Pellet remaining cells by centrifugation in 1.5 mL tube at 13,2000 rpm for 1 min
    • Discard supernatant and repeat
  6. Resuspend pellet in Buffer P1 250 mL
    • Add 250 L Buffer, P2 and mix by inverting 10x
    • Add 350 L Buffer N3 and immediately mix by inverting 10x
  7. Centrifuge at 13, 200 rpm for 10 minute
  8. Pipet supernatant into labelled QIA prep spin column
    • Centrifuge at 13, 200 rpm for 1 minute
    • Discard thoroughflow
  9. Wash column by adding .5 mL Buffer PB *regular for low copy number plasmids*
    • Centrifuge at 13, 200 rpm for 1 minute
    • Discard thoroughflow
  10. Wash by adding .75 mL Buffer PE
    • Centrifuge at 13, 200 rpm for 1 minute
    • Discard thoroughflow
    • Centrifuge for an addition minute to ensure removal of residual wash buffer
  11. Place spin column in a clean, labelled 1.5 mL tube
    • Add 50 LEB to center of column & let stand for 1 minute at room temperature
    • Centrifuge at 12,000 rpm for 1 minute
    • Store at -20℃

Measurement

There are a lot of exciting parts in the Registry, but many parts have still not been characterized. Synthetic Biology needs great measurement approaches for characterizing new parts, and efficient new methods for characterizing many parts at once. If you've done something exciting in the area of Measurement, describe it here!

Best Innovation in Measurement Special Prize

If you've done excellent work in measurement, you should consider nominating your team for this special prize. Designing great measurement approaches for characterizing new parts or developing and implementing an efficient new method for characterizing thousands of parts are good examples.

To compete for the Best Innovation in Measurement prize, please describe your work on this page and also fill out the description on the judging form.

You must also delete the message box on the top of this page to be eligible for this prize.

Inspiration

You can look at what other teams did to get some inspiration!
Here are a few examples: