Team:Warsaw/Calendar-Main/16 May 2008

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PCRs for fusions

Michał K.

  1. Gel electrophoresis (15 May PCR's) and DNA isolation from proper bands (600 bp for AID lane and 2700 bp for T7 polymerase lanes).
  2. Electrophoresis to estimate the concentration of isolated DNA.
  3. PCR - translational fusion: AID + T7 RNA-polymerase - optimization (annealing temperature gradient 60°C - 80°C). Fig. 1.
    Primers:
    AIDlNrH and T7pXbSal
    Template DNA: purified PCR products from 16 May - AID and T7 RNA-polymerase for translational fusion
    Elongation time: 4 minutes
    35 cycles
  4. Optimization of PCR - translational fusion: AID + T7 RNA-polymerase - MgCl2 concentration and number of cycles. Fig. 2.
    Primers:
    AIDlNrH and T7pXbSal
    Template DNA: purified PCR products from 16 May - AID and T7 RNA-polymerase for translational fusion
    Annealing temperature: 73°C
    Elongation time: 4 minutes
  5. Gel electrophoresis of PCR products.

Fig. 1. PCR products - optimization of annealing temperature: 1-DNA ladder;
2 to 8 -annealing temperature 60°C (in lane 2) to 80°C (in lane 8). Fig. 2. PCR products - optimization of MgCl2 concentration and number of cycles:
  1. DNA ladder;
  2. 2 μl MgCl2, 20 cycles;
  3. 3 μl MgCl2, 20 cycles;
  4. 2 μl MgCl2, 25 cycles;
  5. 3 μl MgCl2, 25 cycles;
  6. 2 μl MgCl2, 30 cycles;
  7. 3 μl MgCl2, 30 cycles;
  8. 2 μl MgCl2, 35 cycles;
  9. 3 μl MgCl2, 35 cycles.

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