Team:CSU Fort Collins/Experiments

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Protocols

PCR

Piece Amplification

Component 50μl reaction
Molecular grade H2O Added first. 32.5μL
5x HF Buffer 10μL
10 mM dNTPs 1.0μL
Primer A (10μM) 2.5μL
Primer B (10μM) 2.5μL
Template DNA 1.0μL
DNA polymerase Added last. 0.5μL

Run the PCR reaction in the Thermalcycler with Thermalcycler Program as follows:

Cycle Step Temp(C) Time Cycles
Initial denaturation 98 5 min 1
Denaturation 98 10s 35
Annealing LowerTm+3 15s 35
Extension 72 45s/kb 35
Final Extension 72 10min 1
Hold 4 Hold 1

Colony PCR

Component 50μl reaction
Molecular grade H2O Added first 33.5ul
5x Phusion HF Buffer 10μL
10 mM dNTPs 1.0μL
Primer A (10μM) 2.5μL
Primer B (10μM) 2.5μL
Colony 1
Phusion DNA polymerase Added last. 0.5μL

Run the PCR reaction in the Thermalcycler with Thermalcycler Program as follows:

Cycle Step Temp(C) Time Cycles
Initial denaturation 98 5 min 1
Denaturation 98 10s 35
Annealing LowerTm+3 15s 35
Extension 72 45s/kb 35
Final Extension 72 10min 1
Hold 4 Hold 1

Digestion

Component 50μl reaction
Molecular Grade Water Calculated. Use to make reaction total volume = 50ul
Custsmart Buffer(different if using pstI) 5ul
DNA 1ug
Enzyme 1 .5ul
Enzyme 2 0.5ul

Procedure

Digest your mixture in a water bath at 37C for 60min

Ligation

Transformation

Plasmid Construction

What is the template for your PCR:

Primer A:_________ Tm=__C

Primer B:_________ Tm=__C

Component 50μl reaction
Molecular grade H2O Added first. 32.5μL 33.5ul for colony PCR
5x Phusion HF Buffer 10μL
10 mM dNTPs 1.0μL
Primer A (10μM) 2.5μL
Primer B (10μM) 2.5μL
Template DNA 1.0μL 0uLcolony PCR
Phusion DNA polymerase Added last. 0.5μL

Run the PCR reaction in the Thermalcycler with Thermalcycler Program as follows:

Cycle Step Temp(C) Time Cycles
Initial denaturation 98 5 min 1
Denaturation 98 10s 35
Annealing LowerTm+3 15s 35
Extension 72 45s/kb 35
Final Extension 72 10min 1
Hold 4 Hold 1
  1. Measure concentration of clean-up PCR products with a nano drop
  2. Run 10µL of clean-up PCR with 2ul of SybrGreen DMSO products on a gel 1%Agarose Gel (110V for 60mins). Look for How Many Base Pairs your insert is
  3. Digest (Insert) and (Backbone )with ________+__________ at 37oC for 90mins.
  4. Component 50μl reaction
    Molecular Grade Water Calculated. Use to make reaction total volume = 50ul
    Custsmart Buffer(different if using pstI) 5ul
    DNA 1ug
    Enzyme 1 .5ul
    Enzyme 2 0.5ul
  5. Clean up all DNA fragments with PCR clean-up kit.
  6. Ligation Using the “Ligation Template” excel sheet, calculate the amount of each component to combine in a ligation mix for an Insert: Backbone ratio of 4:1
  7. Incubate at 16C overnight on a heating block.
  8. Component 20μl reaction
    Molecular Grade Water Calculated. Use to make reaction total volume = 20ul
    T4 DNA Ligase Buffer 2ul
    Insert DNA
    Backbone DNA
    T4 DNA Ligase 1ul
  9. Transformation (Need 2x LB+Antibiotic plates. Check for plates. Check for hockey spreaders or glass beads):
    • Set water bath to 42C
    • Remove LB+Antibiotic plates from 4C and allow them to come to RT.
    • Thaw chemically competent cells on ice. Leave in microcentrifuge tube.
    • Add 5μL of ligation mix chemically competent cells.
    • Add 5uL of digested back bone to chemical competent cells as a control
    • Incubate on ice for 30 min.
    • Heat shock cells for 60 sec at 42C without shaking.
    • Aseptically (by the fire or in the hood) add 250μL of LB media to the tube (DO NOT ADD ANTIBIOTIC AT THIS STEP). Cap tightly.
    • Place tube horizontally in shaker. Incubate at 37oC and 225 rpm for 1 hr.
    • In the laminar hood, spread 100uL of transformants onto LB+Antibiotic plates.
    • Leave plates in 37C incubator overnight. Store remaining liquid cultures in 4oC.
  10. Next day, pick and annotate (give each colony a #) 16 colonies onto new LB+Antibiotic plates. Place new plates in 37oC overnight.
  11. Verify all 16 colonies via PCR with Taq DNA polymerase(DO NOT USE PHUSION!!!) using these primers:
  12. Primer A:_________ Tm=__C

    Primer B:_________ Tm=__C

    Component 50μl reaction
    Molecular grade H2O Added first. 38.5ul
    10x Standard Taq Buffer 5μL
    10 mM dNTPs 1.0μL
    Primer A (10μM) 2.5μL
    Primer B (10μM) 2.5μL
    Colony 1
    Taq DNA polymerase Added last. 0.5μL

    Use the following thermalcycler protocol:

    Cycle Step Temp(C) Time Cycles
    Initial denaturation 95 5 min 1
    Denaturation 95 30s 35
    Annealing LowerTm+1 30s 35
    Extension 68 41min/kb 35
    Final Extension 68 5min 1
    Hold 4 Hold 1
  13. Run 10µL of all 16 PCR with 2ul of SybrGreen DMSO products onto 1% Agarose gel (110V for 60mins). Expected size-What is your inserts size????
  14. PICK BEST TWO MUTANTS and start overnight cultures in 2mL LB + Antibiotic. Leave them to grow in the 37C incubator overnight.
  15. Next morning; miniprep them (there should be 4 plasmids). Measure their concentrations with the nanodrop.
  16. sequencing

Gel Electrophoresis

Materials

  • Agarose
  • 1X TAE Buffer
  • Parafilm
  • Electrophoresis chamber and power source
  • SYBR Green
  • Loading Dye
  • DNA Ladder
  • PCR Samples

Procedure

  1. Using a balance, mass out 0.5 gram of agarose (for 1% gel, for 2% mass out 1.0 gram). Mix this with 50 mL of TAE 1X Buffer.
  2. Microwave the mixture, mixing by swirling intermittently, until all the agarose is dissolved and the mixture is homogeneous and clear (about 2 minutes).
  3. Pour the mixture into a gel plate and insert a correctly-sized comb (8, 10, etc. lanes). Allow to cool and solidify on the benchtop.
  4. Mix your samples on a piece of parafilm. Use 10 μL of the appropriate DNA Ladder (1 kb, 100 bp, 2 log, etc.) combined with 1 μL SYBR Green/DMSO in the first lane. For all samples, mix 10 μl of sample and 2 μL of SYBR Green/Dye Mixture.
  5. Place gel in tray into the gel electrophoresis apparatus - wells should be close to the negative (conventionally black) end. Fill apparatus with 1X TAE until the gel is completely submerged. Do not overfill - there is a guide sticker on the apparatus which marks the max fill line.
  6. Load 10 μL of each sample into the appropriate wells.
  7. Connect wiring and run gel electrophoresis at 110 V for 1 hour.
  8. Analyze gel in UV light and see if samples match the expected size using the ladder as a guide.

Experiments

Growth on Fatty Acids

Materials

Material Amount
Something ul
Something ul
Something ul

Procedure

  1. First
  2. Second
  3. Third

Terpenoid Production and Detection

Materials

  • First
  • Second
  • Third

Procedure

  1. First
  2. Second
  3. Third

KillerRed Kill Curve

Materials

  • First
  • Second
  • Third

Procedure

  1. First
  2. Second
  3. Third