Skatebro:PCR: Difference between revisions

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==Tips==
==Tips==
*Want about 50μL volume in each tube, 1 ng template DNA, 300nM of each primer (~200ng)
*Want about 50μL volume in each tube, 1 ng template DNA, [300nM] of each primer (~200ng)
*Try running at 55c regardless of melt temps from primer design programs
*Try running at 55c regardless of melt temps from primer design programs
*If no binding on first run, try a temp gradient trial from 48-64c
*If no binding on first run, try a temp gradient trial from 48-64c

Revision as of 20:38, 31 January 2008

Skatebro:Project08

Tips

  • Want about 50μL volume in each tube, 1 ng template DNA, [300nM] of each primer (~200ng)
  • Try running at 55c regardless of melt temps from primer design programs
  • If no binding on first run, try a temp gradient trial from 48-64c
  • Do a pcr clean up (elute down with 30 microL instead of more) and run a gel with control fragment similar in size
  • Try running PCR reaction with betane for low GC sequences

Steps

  1. Dilute plasmid/template DNA to a concentration of 1ng/μL, and label this tube 'XXXX for PCR'
    • Dilution review: If starting concentration of plasmid DNA = 50ng/μL, add to a tube 49μL of water and 1μL of the 50ng/μL plasmid DNA.
  2. Prepare 25μM tubes of each primer (if you don't have them already)
  3. Add in order: (total reaction volume of 50μL)
    • 49 μL of Tom's PCR mix
    • 1ng template DNA
    • .6μL of each primer (forward and reverse) (.6 μL of the 25μM primer yields roughly [300 nM])
  4. Run the tubes on the thermocycler at an appropriately designed program:
    • ~95deg for 3:00
    • 30 cycles of (a) melt (b) anneal (c) extend
    • 72deg for 10:00